Poster of Episodes in The Big Bang Theory - Season 3 - Season 3

The Big Bang Theory - Season 3

Plot: Worlds collide in Season 3! A love affair with Penny has opened a big, wide, wonderful world of romance for Leonard. But Sheldon likes the world just the way it was, thank you
First Episode Aired On:
Monday, September 21 2009
15 years ago
Last Episode Aired On:
Monday, May 24 2010
14 years ago
Number of Episodes: 23