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The Big Bang Theory
Season 2 · Episode 20
The Hofstadter Isotope
7.620mApril 13, 2009
A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
Episodes
- Episode 1The Bad Fish Paradigm
- Episode 2The Codpiece Topology
- Episode 3The Barbarian Sublimation
- Episode 4The Griffin Equivalency
- Episode 5The Euclid Alternative
- Episode 6The Cooper-Nowitzki Theorem
- Episode 7The Panty Piñata Polarization
- Episode 8The Lizard-Spock Expansion
- Episode 9The White Asparagus Triangulation
- Episode 10The Vartabedian Conundrum
- Episode 11The Bath Item Gift Hypothesis
- Episode 12The Killer Robot Instability
- Episode 13The Friendship Algorithm
- Episode 14The Financial Permeability
- Episode 15The Maternal Capacitance
- Episode 16The Cushion Saturation
- Episode 17The Terminator Decoupling
- Episode 18The Work Song Nanocluster
- Episode 19The Dead Hooker Juxtaposition
- Episode 20The Hofstadter Isotope
- Episode 21The Vegas Renormalization
- Episode 22The Classified Materials Turbulence
- Episode 23The Monopolar Expedition