Series 11 Episode 21
Sheldon isn't pleased by the comic book shop's newfound popularity. Raj attempts to take the credit for Penny's astronomical discovery. Howard and Bernadette try to arrange a date night.
Series 11 Episode 1
The Proposal Proposal: Amy gives Sheldon an answer to his proposal. Howard and Bernadette get unexpected news.
Series 11 Episode 1
Series 11 Episode 2
The Retraction Reaction: Leonard angers the university with an embarrassing interview. Amy and Bernadette bond.
Series 11 Episode 2
Series 11 Episode 3
The Relaxation Integration: As Sheldon stresses about picking a wedding date, Amy urges him to find his laid-back side
Series 11 Episode 3
Series 11 Episode 4
The Explosion Implosion: Howard and Sheldon bond when they drive into the desert to shoot off a model rocket
Series 11 Episode 4
Series 11 Episode 5
The Collaboration Contamination: Penny and Leonard learn new ways to manage Sheldon's behaviour from an unlikely source
Series 11 Episode 5
Series 11 Episode 6
The Proton Regeneration: Sheldon and Wil Wheaton compete to play Professor Proton when his TV series gets a reboot
Series 11 Episode 6
Series 11 Episode 7
The Geology Methodology: Sheldon and Bert collaborate on some research, although Sheldon feels embarrassed about it
Series 11 Episode 7
Series 11 Episode 8
The Tesla Recoil: Leonard and Howard learn that Sheldon went to work with the military behind their backs
Series 11 Episode 8
Series 11 Episode 9
The Bitcoin Entanglement: Sheldon seeks revenge when the guys cut him out of a potentially valuable investment
Series 11 Episode 9
Series 11 Episode 10
The Confidence Erosion: Sheldon and Amy try to eliminate stress from their wedding plans by applying mathematics
Series 11 Episode 10
Series 11 Episode 11
The Celebration Reverberation: Sheldon and Howard plan special birthday celebrations for Amy and Halley, respectively
Series 11 Episode 11
Series 11 Episode 12
The Matrimonial Metric: Sheldon and Amy test their friends to see who should be their best man and maid of honour
Series 11 Episode 12
Series 11 Episode 13
The Solo Oscillation: Sheldon needs some 'alone time' to work, so Amy and Leonard bond over science experiments
Series 11 Episode 13
Series 11 Episode 14
The Separation Triangulation: Raj gets into a domestic drama with his new date Nell and her estranged husband Oliver
Series 11 Episode 14
Series 11 Episode 15
The Novelization Correlation: Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her
Series 11 Episode 15
Series 11 Episode 16
The Neonatal Nomenclature: When Bernadette can't go into labour, her friends employ different tactics to help
Series 11 Episode 16
Series 11 Episode 17
The Athenaeum Allocation: Leonard jumps through hoops to secure the perfect wedding venue for Sheldon and Amy
Series 11 Episode 17
Series 11 Episode 18
The Gates Excitation: The guys do their best to meet Bill Gates when his firm has dealings with Penny's company
Series 11 Episode 18
Series 11 Episode 19
The Tenant Disassociation: Leonard competes with Sheldon in the race to be president of the tenants' association
Series 11 Episode 19
Series 11 Episode 20
The Reclusive Potential: A brilliant scientist invites Sheldon to his isolated cabin. Amy doesn't like her hen do.
Series 11 Episode 20