All 23 episodes from the second season of the US comedy series revolving around two university physicists, Leonard (Johnny Galecki) and Sheldon (Jim Parsons) and their beautiful, free-spirited neighbour Penny (Kaley Cuoco). Episodes are: 'The Bad Fish Paradigm', 'The Codpiece Topology', 'The Barbarian Sublimation', 'The Griffin Equivalency', 'The Euclid Alternative', 'The Cooper-Nowitzki Theorem', 'The Panty Pinata Polarization', 'The Lizard-Spock Expansion', 'The White Asparagus Triangulation', 'The Vartabedian Conundrum', 'The Bath Item Gift Hypothesis', 'The Killer Robot Instability', 'The Friendship Algorithm', 'The Financial Permeability', 'The Maternal Capacitance', 'The Cushion Saturation', 'The Terminator Decoupling', 'The Work Song Nanocluster', 'The Dead Hooker Juxtaposition', 'The Hofstadter Isotope', 'The Vegas Renormalization', 'The Classified Materials Turbulence' and 'The Monopolar Expedition'.