The Big Bang Theory | Season 2 Episode 6 | The Cooper-Nowitzki Theorem
The Big Bang Theory Season 2 Episode 6
Original Air Date: 3 November, 2008
Sheldon, as well as the others, are baffled when a young grad student begins to fall for him.
The Big Bang Theory | Season 2 Episode 5 | The Euclid Alternative
The Big Bang Theory Season 2 Episode 5
Original Air Date: 20 October, 2008
Leonard and his friends want to help Sheldon overcome his fear of driving with an intervention.
The Big Bang Theory | Season 2 Episode 4 | The Griffin Equivalency
Link 1 (megavideo): The Big Bang Theory Season 2 Episode 4
Original Air Date: 13 October, 2008
Raj gets a swelled head and goes after Leonard’s new crush, Penny, after being made famous in a magazine article leading to a disastrous result.
The Big Bang Theory | Season 2 Episode 2 | The Codpiece Topology
Link 1 (youku): The Big Bang Theory Season 2 Episode 2
Link 2 (supernova): Th Big Bang Theory Season 2 Episode 2
Original Air Date—29 September 2008
After seeing Penny with her new boyfriend, Leonard turns to Leslie for comfort. The move angers Sheldon, who considers Leslie his comic book-style “arch enemy.”

