Season 4
24 episodes
22 min. per episode
Where to watch
A quirky physicist navigates love and friendship, discovering life's chaos beyond equations when a vibrant actress moves in next door.
Episodes
Penny ends up tagging along on Sheldon's first ever date with Amy, while Howard finds an unusual use for a robotic arm.
When Sheldon calculates the technology to download his consciousness into a robot won't be invented soon enough, he desperately tries to find a way to increase his lifespan.
Following his 'breakup' with Amy, the gang become concerned with Sheldon's obsessive search for non-human companionship and call his mother to intervene.
Howard tries to get Penny's help in winning back Bernadette, but first has to confess the embarrassing reason why they broke up in the first place. Raj and Sheldon clash over a desk.
Sheldon is scared that he is in a relationship when Amy asks him to meet her mother, and Leonard asks Howard and Bernadette to set him up because he is the only person in the group without a girlfriend.
Aspiring film actress Penny moves into a Pasadena apartment across the hall from brilliant, but socially awkward, physicists Sheldon Cooper and Leonard Hofstadter and shows them how little they know about life outside of the lab.