4 Series, 64 Episodes
After nearly getting into a fight with his ex-wife's new boyfriend, Charlie decides to return to therapy. But he just happens to be sleeping with the only therapist he trusts - his best friend, Kate.
The new 'evolved' Charlie has to deal with a ghost from his old carousing, baseball-playing days when a woman he slept with just to break a batting slump shows up as a new patient in group therapy
Charlie challenges his group to do 36 hours of sleep deprivation therapy so that their 'inhibitions come down and the truth comes out'. Unfortunately, the results turn out to be the exact opposite.
A long-standing rivalry over who is the better therapist leads to all-out hostilities when Kate steals Patrick, one of Charlie's group patients
Charlie falls for Jen's new business partner Lori, only to discover she thinks therapy is a scam. In the therapy group, Patrick asks Charlie to counsel the angry ghost of his mother.
Inflamed by a comment Kate makes about his intelligence, Charlie covertly starts dating a brilliant young woman who works as a barista. The only problem is that she's one of Kate's patients...
Charlie and his ex, Jennifer, have issues with the fact that he still tries to manage her life. When one of the prison therapy group patients turns up at Charlie's place, Jennifer gets her own back.
Charlie has to evaluate the depth of his involvement in his patients' lives when he accidentally helps a patient, who vicariously enjoys other people's anger, to hook up with a highly unsuitable woman
Charlie gets an unexpected visit from his hyper-critical, bullying dad (played by his real-life father, Martin Sheen). In the therapy group, Charlie attempts to help Lacey with her road rage.
When Charlie asks Kate if she wants to go to the cinema, she interprets this as a romantic gesture, worries that he is getting too attached to her and rushes to fix him up on a date with someone else
Charlie takes Kate to his sister's baby shower, even though they haven't seen each other for years, but he soon gets into a bad temper
When Charlie's father begins to display the symptoms of Alzheimer's disease, Charlie is unconvinced. Nolan has a breakthrough, with a little help from Patrick.
Charlie embarks on a questionable romantic relationship with a former patient, but some of her other ex-therapists have the same idea
Charlie's father falls in with a bad crowd, but it seems he's the corrupting influence on them. Lacey helps Patrick to deal with a bully from his high school years.
When an outbreak of mold makes Jennifer's house temporarily uninhabitable, she moves in with Charlie for a few days, but the situation makes Kate feel jealous
Charlie attempts to help his patient Ed by giving him a pill that is a placebo designed to reduce anger in anyone who takes it. Will the 'deception therapy' prove successful?
Charlie asks his daughter Sam's teacher out on a date after paying a visit to the school to discuss Sam's grades. Lacey has a series of strange and disturbing dreams.
Music artist CeeLo Green hires Charlie as his personal therapist but needs him to be on call 24/7. Lacey decides to become a model and asks Nolan to be her photographer.
Charlie and Kate face off as expert witnesses on opposing sides in the same trial. Charlie sets Nolan a homework assignment to help him get in touch with his feelings.
Charlie and his father Martin get into an argument when Martin wants Charlie's daughter Sam to be baptised and exerts pressure to achieve his aim
Charlie makes an unpleasant discovery about Jennifer's business partner Lori when he begins dating her. The support group seek out a rich boyfriend for Lacey.
When Lindsay Lohan hires Charlie to be her therapist, the pair begin a tumultuous relationship that ends up getting her into trouble
Charlie's neighbours are up in arms when they learn he's meeting patients with anger issues at his home. Lacey encounters one of the neighbours, only to make the situation worse.
When Charlie learns that Sam's favourite horse has gone to a therapy farm, he decides to take his group on an equine therapy trip
Charlie inadvertently helps to push two patients from his therapy group towards becoming romantically involved
Charlie gets Nolan a job with Kate, and uses him to spy on her when Nolan makes an unexpected discovery. Meanwhile, Charlie has a support group created in prison for Lacey.
Issues arise when Charlie and his Dad coach a high school baseball team together. Kate takes over Charlie's therapy group during his coaching gig.
Charlie's ex Jennifer competes with Charlie when she becomes a 'life coach' to his patient Patrick. Lacey helps Charlie's dad get a Facebook account.
Charlie's dad, Martin, tries to get Charlie and Jennifer back together by interfering in Charlie's relationship with Kate. Nolan helps Ed as his 'anger buddy'.
Charlie tries to deal with both Kate breaking up with him and Jennifer getting back together with her ex-boyfriend Sean. Meanwhile, Charlie's group volunteers at a soup kitchen.
Charlie tries to deal with his anger issues about Kate by seeing a new female therapist who has unorthodox therapy methods. Patrick tricks Ed into thinking he won the lottery.
Recently broken up, Charlie and Kate try to control their urges as they begin work on their sex study. Lacey starts a new job as a pharmaceutical rep.
Charlie discovers scandalous information about Jen's new boyfriend, Sean, when he's ordered by a judge to attend Charlie's therapy group. Meanwhile, Ed moves in with Patrick.
Charlie breaks all the professional rules by starting a friends-with-benefits relationship with one of the subjects of his sex study. Nolan and Patrick fight over a woman.
A group trip to Lake Tahoe is interrupted when Charlie receives a text message containing interesting news from Kate
When Charlie begins dating Monica, a woman he meets on a technical support call, her nerdy ex boyfriend finds a way to make Charlie's life hell
Charlie begins dating Wynona (guest star LeAnn Rimes), not knowing that her brother is a serial killer from his prison support group
Charlie suspects that Jen's boyfriend, Sean, is cheating on her with Lacey, one of his patients. Ed and Patrick help Nolan when his apartment gets robbed.
When Charlie's Dad moves in with Ed and the new roommates hit someone with their car, Charlie has to deal with the aftermath. Meanwhile, Lacey takes Nolan clubbing.
Charlie mistakenly becomes a sex surrogate for one of Kate's patients, who's a 32-year-old virgin. Jennifer gets upset when Sam gets a tattoo.
Charlie goes too far when he becomes jealous over Jennifer's new, much younger boyfriend. Meanwhile, Patrick helps Lacey prepare for her first modelling gig.
Charlie's held hostage by his prison therapy group during a riot. And Nolan, Lacey and Ed throw Patrick a birthday party.
Charlie and Kate have to make sacrifices if they're to get new funding for their study. Meanwhile, Nolan's new online girlfriend isn't who she says she is...
Charlie tries to stop Kate from having sex with the executive in charge of funding their study. Charlie's dad, Martin, offers relationship advice to Lacey.
In order to throw an epic party, Charlie recruits Sean's help. Meanwhile, Lacey inadvertently gets Ed hooked on drugs.
When a grad student observes Charlie's therapy group, Charlie and Nolan compete for her attention. Martin and Ed hatch a patriotic scam.
Charlie hires a new psychologist to replace Kate in his sex study. Jennifer and Lacey try to prank Sean by claiming he got them both pregnant.
Charlie hooks up with Jordan's AA sponsor who's a recovering sex addict, while Ed helps Patrick to design a challenging dress
A pimp joins the therapy group and makes an unusual payment for Charlie's services. Meanwhile, Sean and Michael get into a dating mishap.
When a new patient who claims he's the Devil joins Charlie's therapy group, Nolan sells his soul to him so that Lacey will love him. Jennifer and Sam take a special interest in their new neighbours.
When Charlie hooks up with his ex, Jennifer, Sean looks to take revenge since he already told Charlie he wants to get back together with her
When Lacey's parents tell her she has to agree to an arranged marriage or else lose her trust fund, Charlie suggests she pretends to already be in a relationship with Patrick
While Charlie wants a 'do-over' with the woman he lost his virginity to, Lacey and Patrick try and keep up appearances when her parents pay a surprise visit
A problem crops up when Charlie's pursued by a reporter who wants to write an article about the sex study. Lacey tries to take advantage of Nolan's lingerie store employee discount.
Charlie's patient Lacey gets sentenced to house arrest and moves in with Charlie. Meanwhile, Sean tries to help Michael pick up women.
When Ed steals the baby Jesus from a Nativity display, Charlie's Christmas plans with Sasha are derailed. And Sean hits on Jordan on Christmas Eve.
Charlie's therapy group search for a replacement therapist when his partying ways get him arrested and cost him an appearance before the Ethics Committee
Charlie convinces Jordan to pose as his prison patient Wayne's fiancée to avert Wayne's transfer to a dangerous prison. Meanwhile, Lacey and Patrick gamble part of Lacey's parents' money way.
While Charlie gets a too involved with Jordan's twin sister, Lacey's sister tries to blackmail her when she learns of her sham wedding to Patrick
When one of Patrick's friends visits from out of town, Charlie and Sean start a competition to see who can hook up with her first
Charlie tries to use Jennifer to play a trick on an old party buddy who's become a priest. Lacey and Patrick's sham wedding faces ruin because of another man.
Charlie begins dating a woman whose family wants Ed, and Charlie's dad Martin, evicted from their apartment. Meanwhile, Sean offers to help Jordan with her research.
Charlie's licence could be in jeopardy when he learns that a woman he slept with is actually his probation officer's daughter
When Charlie becomes interested in a woman who won't date him unless he has a good online date rating, he enlists Jordan's help. And Ed teaches Nolan how to ride a bike in order to date his mother.
After Jordan blows a chance to get her and Charlie's sex study published, Charlie's inspired to start a new clinic at the prison. And Lacey unknowingly moves into an apartment next door to Nolan.
Jordan comes up with a plan to stop Charlie constantly choosing sex over work. And the guys in the therapy group give Lacey's apartment a makeover.
While Jordan's drunken actions with one of her subjects put the prison study in jeopardy, Sean helps Patrick make an audition video for a designer reality show
How far will Charlie go to keep Lacey from ruining her ex's wedding? Meanwhile, Jordan makes a big mistake while taking care of a sick Sean.
After he sleeps with the girlfriend of a violent prisoner in his clinic, Charlie learns that the prisoner is being released the next day...
When Charlie breaks it off with a police officer he's been dating, she abuses her power to make his life miserable. Meanwhile, Jordan and Sean try and work out what kind of relationship they can have.
An ex-con from Charlie's study who Charlie reluctantly hires to be his plumber immediately takes an interest in Lacey. And Patrick looks for a way to avoid being the bad guy on his reality show.
Charlie creates chaos when he surprises his therapy group by bringing their dysfunctional parents along to one of their sessions
When Sean tells Charlie not to hook up with his younger sister (guest star Aly Michalka), Charlie struggles to resist. Meanwhile, Patrick and Lacey discover that they're dating the same man.
Problems arise after Charlie's girlfriend brings a friend home with her. Lacey uses Jordan's help to try and sell her eggs.
After Charlie's big mouth gets Sean fired from his job at the strip club, he tries to get him his job back without Sean knowing he got him fired
Charlie plans to get some publicity for helping a man who's being released from prison 50 years after he was wrongfully convicted. Jordan and Sean worry that their arrangement is getting more serious.
Charlie and Jordan pose as an unhappy married couple to catch a shady therapist who scammed Ed
Charlie sets Sean up with a woman who can help him and Jordan get a keynote speaker gig, but Jordan's upset when she finds out. And Lacey's latest scam involves pretending to be in a coma.
The new warden wants to cut Charlie and Jordan's prison therapy group, so Charlie tries to change her mind. Meanwhile, Nolan's new limo driver job puts him in an awkward situation with Lacey.
The warden allows the prison group to continue, but Charlie could be in big trouble when he inadvertently helps one the prisoners in an escape attempt
Charlie gets suspended from his practice when he struggles to control his temper. Jordan and Sean take advantage of the situation in order to play some pranks on Charlie.
While Charlie goes to war with his garbage man, Nolan and Lacey compete for the same job
Paranoia plagues Charlie when he thinks he's being tailed by a private investigator. And Nolan and Lacey move into Nolan's work limo.
Jordan sets a trap for Charlie when she arranges him a date with a heartbreaker. Patrick spots an opportunity when Lacey begins dating a record producer.
A private investigator Charlie's dating challenges him to try and cheat on her without getting caught. And when Lacey does nude modelling for Patrick's art class, Nolan takes a sudden interest in art.
When Charlie begins dating his computer nerd ex-girlfriend again, she hacks into his computer and takes over his life. Meanwhile, Lacey and Patrick try and trick her rival into having sex with Ed.
While Charlie unwittingly creates a monster when he helps Nolan to unleash his anger, Sean and Jordan try and use role-playing to spice up their love life
Charlie lets his girlfriend temporarily turn his home into a halfway house for sex workers. And Jennifer starts a new business selling used tea kettles online.
When Patrick goes through a crisis of confidence, Charlie comes up with an unlikely solution. Ed and Lacey join forces to get revenge on Sean.
Lacey gets engaged to a creepy billionaire after Charlie tricks her into believing her Dad is broke. Meanwhile, Nolan makes a business arrangement with Sean's strip club.
Ed's marriage is almost destroyed by Charlie when he invites him and his wife to Thanksgiving dinner. And Jordan causes a scene at dinner because she suspects that Sean's cheating on her.
After a night of wild partying in Vegas, Charlie discovers that his life has got a lot more complicated
Charlie risks his life to satisfy his thrill-seeking girlfriend while Lacey and Patrick go into business together designing women's shoes
Charlie wants to make a business deal with Jordan's ex-husband, but knows Jordan won't go along with it if she knows the identity of the business partner
Charlie gets trapped in a wild dream where he can't tell between what is and isn't real. And at the prison, Jordan's convinced that members of the therapy group are conspiring against her.
A matchmaker sets Charlie and Sean up for a double date, but they each wind up with the wrong woman. Meanwhile, Jordan gets the lead in the prison's production of Romeo and Juliet.
Nolan loses his job after Charlie pushes him to take more control of his life and improve his relationship with Lacey. And Sean gets conned when he plays poker with Ed and his friends.
Martin tells Charlie to stay away from his new girlfriend's daughter, but Charlie's not the one doing the pursuing. Lacey pretends to be pregnant to claim an expensive ring from her grandmother.
Charlie wants to fire his and Jordan's new associate, as she always sides with Jordan. And Nolan tries to change his habits in order to impress Lacey's parents.
In the last ever episode, Charlie has to decide between keeping his therapy group or becoming a sports psychologist for a baseball team