Episode Guide :: Season 2

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# Episode Title Original Air Date
2.01 The Bad Fish Paradigm September 22, 2008
2.02 The Codpiece Topology September 29, 2008
2.03 The Barbarian Sublimation October 6, 2008
2.04 The Griffin Equivalency October 13, 2008
2.05 The Euclid Alternative October 20, 2008
2.06 The Cooper-Nowitzki Theorem November 3, 2008
2.07 The Panty Pinata Polarization November 10, 2008
2.08 The Lizard-Spock Expansion November 17, 2008
2.09 The White Asparagus Triangulation November 24, 2008
2.10 The Vartabedian Conundrum December 8, 2008
2.11 The Bath Item Gift Hypothesis December 15, 2008
2.12 The Killer Robot Instability January 12, 2009
2.13 The Friendship Algorithm January 19, 2009
2.14 The Financial Permeability February 2, 2009
2.15 The Maternal Capacitance February 9, 2009
2.16 The Cushion Saturation March 2, 2009
2.17 The Terminator Decoupling March 9, 2009
2.18 The Work Song Nanocluster March 16, 2009
2.19 The Dead Hooker Juxtaposition March 30, 2009
2.20 The Hofstadter Isotope April 13, 2009
2.21 The Vegas Renormalization April 27, 2009
2.22 The Classified Materials Turbulence May 4, 2009
2.23 The Monopolar Expedition May 11, 2009

Season Recap

The Big Bang Theory's second season mainly focuses on character development and has few overarching plotlines. Leonard and Penny's relationship, which started with a date in the first season finale, ends quickly when Penny worrys she's not smart enough for Leonard. When Leonard suggests she go to college, she slams the door in his face. Leonard and Penny quickly patch up their friendship. Penny's feelings for Leonard become clearer at the end of the season, as Leonard and the guys heads away for a three-month expedition in the Arctic.

Sheldon grows more comfortable with Penny being a part of their social group during the season. A key moment in their friendship comes when Penny gave Sheldon a napkin signed by Leonard Nimoy for Christmas. Howard's womanizing ways continue throughout the season, though the break-up of his short-term relationship with Leslie Winkle reveal his more sensitive side. Raj has a moment of success when he discovers a trans-neptuinian planetoid and later shows signs of progress when he's able to briefly apologize to Penny without drinking any alcohol.

The Big Bang Theory's second season contained twenty-three episodes aired between September 22, 2008 and May 11, 2009. The show was renewed for a further two seasons in March 2009. The Big Bang Theory ranked #44 in the ratings at the end of its second season.

Season 2 DVD

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Relive the complete second season of The Big Bang Theory all over again with this four-disc DVD box-set. Featuring all twenty-three episodes of the show's sophomore season and never-before-seen bonus features.

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