Watch The Big Bang Theory Online Season 2

Episode 1: The Bad Fish Paradigm
Air Date: Sep 22, 2008
Views: 85,151
Comments: 2
Rating: 3.98/5 (101)
Penny and Leonard go on a date, but when their night out goes awry, Penny finds a friend in Sheldon.
Episode 2: The Codpiece Topology
Air Date: Sep 29, 2008
Views: 77,008
Comments: 2
Rating: 3.79/5 (72)
Leonard begins dating Sheldon’s nemesis, Leslie Winkle, after seeing Penny with a handsome new guy.
Episode 3: The Barbarian Sublimination
Air Date: Oct 6, 2008
Views: 78,458
Comments: 3
Rating: 3.70/5 (112)
Penny is introduced to online gaming by Sheldon, and she quickly becomes addicted.
Episode 4: The Griffin Equivalency
Air Date: Oct 13, 2008
Views: 84,044
Comments: 5
Rating: 3.83/5 (89)
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.
Episode 5: The Euclid Alternative
Air Date: Oct 20, 2008
Views: 80,176
Comments: 0
Rating: 3.92/5 (91)
Leonard and his friends want to help Sheldon overcome his fear of driving with an intervention.
Episode 6: The Cooper-nowitzki Theorem
Air Date: Nov 3, 2008
Views: 79,371
Comments: 1
Rating: 3.83/5 (83)
No Description Available.
Episode 7: The Panty Pia Ata Polarization
Air Date: Nov 10, 2008
Views: 80,564
Comments: 3
Rating: 3.72/5 (108)
After Sheldon bans Penny from the apartment for what she feels are minor infractions, she declares and all-out war on him.
Episode 8: The Lizard-spock Expansion
Air Date: Nov 17, 2008
Views: 78,251
Comments: 0
Rating: 3.09/5 (126)
Has a smitten Wolowitz found the love of his life, he thinks so until she meets Leonard.
Episode 9: The White Asparagus Triangulation
Air Date: Nov 24, 2008
Views: 83,889
Comments: 1
Rating: 3.79/5 (81)
No Description Available.
Episode 10: The Vartabedian Conundrum
Air Date: Dec 8, 2008
Views: 77,602
Comments: 3
Rating: 3.92/5 (86)
Leonard ask for advice from Penny when his relationship with Stephanie begins moving too fast for him.
Episode 11: The Bath Item Gift Hypothesis
Air Date: Dec 15, 2008
Views: 80,847
Comments: 8
Rating: 4.32/5 (136)
No Description Available.
Episode 12: The Killer Robot Instability
Air Date: Jan 12, 2009
Views: 69,886
Comments: 3
Rating: 3.92/5 (78)
No Description Available.
Episode 13: The Friendship Algorithm
Air Date: Jan 19, 2009
Views: 73,243
Comments: 0
Rating: 3.72/5 (67)
No Description Available.
Episode 14: The Financial Permeability
Air Date: Feb 2, 2009
Views: 91,390
Comments: 0
Rating: 3.71/5 (86)
Penny receives help from Sheldon over her financial crisis, but causes Penny's burly ex-boyfriend, Kurt, to have a confrontation with Sheldon.
Episode 15: The Maternal Capacitance
Air Date: Feb 9, 2009
Views: 72,134
Comments: 2
Rating: 3.97/5 (103)
No Description Available.
Episode 16: The Cushion Saturation
Air Date: Mar 2, 2009
Views: 90,163
Comments: 2
Rating: 3.82/5 (78)
A paintball game sparks a fight between Penny and Sheldon, and leads to romance for Wolowitz and Leslie.
Episode 17: The Terminator Decoupling
Air Date: Mar 9, 2009
Views: 81,604
Comments: 1
Rating: 3.84/5 (79)
Leonard, Sheldon, Wolowitz and Raj take a train trip to San Francisco and can hardly believe beautiful sci-fi actress Summer Glau is onboard.
Episode 18: The Work Song Nanocluster
Air Date: Mar 16, 2009
Views: 85,339
Comments: 1
Rating: 4.09/5 (81)
No Description Available.
Episode 19: The Dead Hooker Juxtaposition
Air Date: Mar 30, 2009
Views: 96,057
Comments: 5
Rating: 3.88/5 (77)
Penny squares off with a new beautiful female neighbor who may become the building's new Penny.
Episode 20: The Hofstadter Isotope
Air Date: Apr 13, 2009
Views: 86,249
Comments: 1
Rating: 3.59/5 (80)
While at a comic book store, Penny is romanced by a friend of the guys'. Meanwhile, Leonard and Wolowitz head to a bar for ladies night in hope of finding women.
Episode 21: The Vegas Renormalization
Air Date: Apr 27, 2009
Views: 88,068
Comments: 3
Rating: 3.97/5 (101)
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
Episode 22: The Classified Materials Turbulence
Air Date: May 4, 2009
Views: 94,822
Comments: 5
Rating: 3.70/5 (99)
Penny makes an unexpected discovery concerning Leonard, while on a date with Stuart. Meanwhile, a design flaw in his NASA project finds Wolowitz needing some help from his friends.
Episode 23: The Monopolar Expedition
Air Date: May 11, 2009
Views: 83,605
Comments: 1
Rating: 4.06/5 (84)
Leonard and Penny come to terms with their feelings for each other, as Leonard prepares himself for a three-month long science trip.