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Big Bang Theory

Season One

Stay up-to-date with Leonard, Sheldon, and Penny's adventures with our weekly episode guides...

This Week's Episode ...


The Tangerine Factor

A saucy blog is the straw that breaks the camel's back for Penny's latest relationship - queue an advance from a smitten Leonard. Sheldon's got more pressing matters on his mind though. He's intent on discovering whether the local Chinese restaurant is passing off orange chicken as tangerine chicken...

Previous Episodes ...


The Peanut Reaction

Leonard's birthday causes all sorts of madness. Sheldon moonlights as a shop assistant, Howard has an unexpected colonoscopy and a drunken Raj ends up singing 'True Colours'. Who said geeks don't know how to have fun...?

The Shiska Indeterminacy

Sheldon’s twin sister Missy is in town and she’s a stunner! Leonard, Howard and Raj compete for her attention and try anything to outdo each other, though Sheldon declares he will decide whom his sister dates...

The Nerdvana Annihilation

Leonard buys a replica time machine online, which makes Penny late for work. After Penny lashes out at Leonard for his geeky ways, Leonard's prompted to get rid of all his nerdmorabilia, but soon reconsiders when he sees Penny on a date with a hunka-hunka...

The Bat Jar Conjecture

Good news travels fast and none more so than good geek news. Excitement is all around when Raj, Leonard, Howard and Sheldon discover that their main opponents for the annual physics bowl are not entering a team this year leaving them with a fighting chance…

The Pancake Batter Anomaly

Penny is back from Nebraska, but unfortunately for 'germophopic' Sheldon the only present she's brought back from her trip is a nasty flu bug which she thoughtlessly releases into the atmosphere of their flat. Despite his most fervent preventative steps, measuring fluid input and output and even cultivating his own antibodies in a base of green jelly, Sheldon is doomed to succumb to the evil virus.

The Loobenfeld Decay

Having overheard Penny sing, Leonard and Sheldon go to extreme lengths to avoid watching her perform in the musical, Rent. One lie leads to another and hey, the next thing you know, you’re attending a drug intervention...

The Cooper-Hofstadter Polarization

Physics is the one thing that brings Sheldon and Leonard together, but it also tears them apart when the Institute for Experimental Physics invites the two to present their findings at a conference. Sheldon refuses and expects Leonard to do the same, but, shock horror, he does not...

The Grasshopper Experiment

Raj, the man who can't for the life of him speak to women, has been set up for a blind date. However, Penny soon discovers that when plied with alcohol, Raj's shyness around the opposite sex suddenly evaporates, along with his dignity...

The Dumpling Paradox

De La Soul once sang “three is the magic number”, well, for Leonard and Sheldon and Raj these lyrics certainly don’t hold true. Howard abandons the gang for the lusty ways that Penny’s old friend Christie provides and as such puts their Halo night in jeopardy...

Middle Earth

Be prepared for some frightful sights in Big Bang Theory this week because for Leonard, Sheldon, Howard and Raj it's Halloween! They're invited to a party at Penny's apartment and whilst wearing some outrageous costumes they embark on making a mark on the social scene...

The Hamburger Postulate

There's innuendo a-go-go in Big Bang Theory this week when co-worker Leslie Winkle returns to steal Leonard's heart away from Penny. Will Leonard's fingering technique impress her or will have to once again settle for fighting in an imaginary condiment conflict?

The Luminous Fish Effect

Mum's the word in The Big Bang Theory this week. Never one to mince his words, Sheldon doesn't quite make a good impression on the new department head of CalTech, in fact, he gets the sack. Leonard gets concerned for his roommate and calls the only person he knows that can truly sort out his fellow physicist - Sheldon's mother...

The Fuzzy Boots Corollary
Leonard seems intent on getting his mind off the cheesecake scented goddess Penny after he catches her snogging the face off a new squeeze, so he decides the best course of action for doing this is by dating one of his lab-mates. When the date turns out to have more of a physics lesson feel to it than a physical reaction, Leonard goes back to plan A...

The Big Bran Hypothesis
Penny leaves Sheldon and Leonard the spare keys to let the furniture guy in, but when Sheldon sees the state of her apartment he can't help but let his compulsive need to organise the world around him get the better of him. This doesn't impress Penny one bit...

Pilot
Sheldon and Leonard are two of the most intelligent people you could ever meet. Get them talking about quantum physics and they'll be talking to their hearts' content, get them talking to girls and they'll be talking rubbish! And that's exactly what happens when they get a new next door neighbour, the delectable, but ever so slightly dim, Penny.