Leonard and Sheldon's friendship is put to the test when Leonard wants to present a paper they co-authored at a physics convention, but Sheldon doesn't.
Aired: Sep 24, 2007 A pair of socially awkward theoretical physicists meet their new neighbor Pen...
Aired: Oct 1, 2007 Penny is furious with Leonard and Sheldon when they sneak into her apartment ...
Aired: Oct 8, 2007 Leonard gets upset when he discovers that Penny is seeing a new guy, so he tr...
Aired: Oct 15, 2007 Sheldon's mother is called to intervene when he delves into numerous obsessio...
Aired: Oct 22, 2007 Leslie seduces Leonard, but afterwards tells him that she is only interested ...
Aired: Oct 29, 2007 The guys are invited to Penny's Halloween party, where Leonard has yet anothe...
Aired: Nov 5, 2007 When Howard hooks up with Penny's old friend, his absence in the gang causes ...
Aired: Nov 12, 2007 When Raj's parents set him up on a blind date, he finds he can talk to women ...
9. The Cooper-Hofstadter Polarization
Aired: Mar 17, 2008Leonard and Sheldon's friendship is put to the test when Leonard wants to pre...
Aired: Mar 24, 2008 Leonard lies to Penny so he and Sheldon can get out of watching her perform, ...
11. The Pancake Batter Anomaly
Aired: Mar 31, 2008When Sheldon gets sick, Leonard, Howard and Raj go AWOL, leaving a reluctant ...
Aired: Apr 14, 2008 Sheldon decides to give up his work and focus on other tasks when a 15-year-o...
Aired: Apr 21, 2008 Sheldon becomes so intent on demonstrating his intellectual superiority over ...
Aired: Apr 28, 2008 Penny gets mad at the guys when their full scale model of a time machine caus...
15. The Pork Chop Indeterminacy
Aired: May 5, 2008Leonard, Howard and Raj fight over Sheldon's twin sister when she arrives in ...
Aired: May 12, 2008 When Penny learns that Leonard has never had a birthday party, she and the re...
Aired: May 19, 2008 After a bad breakup, Penny finally agrees to go out on a date with Leonard, h...
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