The Big Bang Theory

Season 2, Episode 20: The Hofstadter Isotope

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A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.

All Episodes - Season 2

The Bad Fish Paradigm
Episode 1
The Bad Fish Paradigm
 The Codpiece Topology
Episode 2
The Codpiece Topology
 The Barbarian Sublimation
Episode 3
The Barbarian Sublimation
 The Griffin Equivalency
Episode 4
The Griffin Equivalency
 The Euclid Alternative
Episode 5
The Euclid Alternative
 The Cooper-Nowitzki Theorem
Episode 6
The Cooper-Nowitzki Theorem
 The Panty Piñata Polarization
Episode 7
The Panty Piñata Polarization
 The Lizard-Spock Expansion
Episode 8
The Lizard-Spock Expansion
 The White Asparagus Triangulation
Episode 9
The White Asparagus Triangulation
 The Vartabedian Conundrum
Episode 10
The Vartabedian Conundrum
 The Bath Item Gift Hypothesis
Episode 11
The Bath Item Gift Hypothesis
 The Killer Robot Instability
Episode 12
The Killer Robot Instability
 The Friendship Algorithm
Episode 13
The Friendship Algorithm
 The Financial Permeability
Episode 14
The Financial Permeability
 The Maternal Capacitance
Episode 15
The Maternal Capacitance
 The Cushion Saturation
Episode 16
The Cushion Saturation
 The Terminator Decoupling
Episode 17
The Terminator Decoupling
 The Work Song Nanocluster
Episode 18
The Work Song Nanocluster
 The Dead Hooker Juxtaposition
Episode 19
The Dead Hooker Juxtaposition
 The Hofstadter Isotope
Episode 20
The Hofstadter Isotope
 The Vegas Renormalization
Episode 21
The Vegas Renormalization
 The Classified Materials Turbulence
Episode 22
The Classified Materials Turbulence
 The Monopolar Expedition
Episode 23
The Monopolar Expedition
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