Previously on The Big Bang Theory
Season 1: Episode 09: The Cooper-Hofstadter Polarization
When Sheldon and Leonard are invited to present their joint findings at a physics conference, Sheldon refuses. But when Penny steps in to mediate, it only deepens the rift between the two best friends.
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Next on Big Bang Theory
July 28, 8:00pm et/pt
The Nerdvana Annihilation: The guys buy the old time machine prop from the movie. TVPG-DL