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When a past mistake comes to light, Sheldon makes Leonard pay by walking a mile in his shoes on The Big Bang Theory.
Sheldon seeks his revenge when his childhood idle Dr. Proton asks for Leonard's help with an experiment on The Big Bang Theory.
Sheldon worries that a major scientific breakthrough will follow him for the rest of his career, while Howard's grand romantic gesture affects other relationships on The Big Bang Theory.
Amy and Sheldon's relationship is put to the test when she takes a job at his university on The Big Bang Theory.
Sheldon vows revenge when Amy ruins one of his all time favorite movies while Raj and Stuart create their online dating profiles on The Big Bang Theory.
Raj's scavenger hunt turns into a serious competition that doesn't bring out everyone's good side on The Big Bang Theory.
Things are chilly between Sheldon and Leonard when Leonard comes home from his North Sea expedition on The Big Bang Theory.
Sheldon and Penny share intimate secrets on the Season 7 premiere of The Big Bang Theory.
In the season 6 finale of The Big Bang Theory, Penny and Sheldon are shocked when Leonard considers taking a great job opportunity overseas.
The women end up playing Dungeon and Dragons with the boys when their vacation to Vegas is called off on The Big Bang Theory.