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Can you get any geekier than an experimental physicist and a theoretical physicist? Not really. Leonard and Sheldon are roommates who live across the hall from a drop-dead gorgeous waitress, Penny. She has aspirations to be a Hollywood actress and, naturally, has a bit more social skills and common sense than her new neighbors. Comedy ensues.

Watch Season 1 Online:

Season 1, Episode 1: Pilot

Season 1, Episode 2: The Big Bran Hypothesis

Season 1, Episode 3: The Fuzzy Boots Corollary

Season 1, Episode 4: The Luminous Fish Effect

Season 1, Episode 5: The Hamburger Postulate

Season 1, Episode 6: The Middle Earth Paradigm

Season 1, Episode 7: The Dumpling Paradox

Season 1, Episode 8: The Grasshopper Experiment

Season 1, Episode 9: The Cooper-Hofstadter Polarization

Season 1, Episode 10: The Loobenfeld Decay

Season 1, Episode 11: The Pancake Batter Anomaly

Season 1, Episode 12: The Jerusalem Duality

Season 1, Episode 13: The Bat Jar Conjecture

Season 1, Episode 14: The Nerdvana Annihilation

Season 1, Episode 15: The Pork Chop Indeterminacy

Season 1, Episode 16: The Peanut Reaction

Season 1, Episode 17: The Tangerine Factor

Watch Season 2 Online:

Season 2, Episode 1: The Bad Fish Paradigm

Season 2, Episode 2: The Codpiece Topology

Season 2, Episode 3: The Barbarian Sublimation

Season 2, Episode 4: The Griffin Equivalency

Season 2, Episode 5: The Euclid Alternative

Season 2, Episode 6: The Cooper-Nowitzki Theorem

Season 2, Episode 7: The Panty Piñata Polarization

Season 2, Episode 8: The Lizard Spock-Expansion

Season 2, Episode 9: The White Asparagus Triangulation

Season 2, Episode 10: The Vartabedian Conundrum

Season 2, Episode 11: The Bath Item Gift Hypothesis

Season 2, Episode 12: The Killer Robot Instability

Season 2, Episode 13: The Friendship Algorithm

Season 2, Episode 14: The Financial Permeability

Season 2, Episode 15: The Maternal Capacitance

Season 2, Episode 16: The Cushion Saturation

Season 2, Episode 17: The Terminator Decoupling

Season 2, Episode 18: The Work Song Nanocluster

Season 2, Episode 19: The Dead Hooker Juxtaposition

Season 2, Episode 20: The Hofstadter Isotope

Season 2, Episode 21: The Vegas Renormalization

Season 2, Episode 22: The Classified Materials Turbulence

Season 2, Episode 23: The Monopolar Expedition

Watch Season 3 Online:

Season 3, Episode 1: The Electric Can Opener Fluctuation

Season 3, Episode 2: The Jiminy Conjecture

Season 3, Episode 3: The Gothowitz Deviation

Season 3, Episode 4: The Pirate Solution

Season 3, Episode 5: The Creepy Candy Coating Corollary

Season 3, Episode 6: The Cornhusker Vortex

Season 3, Episode 7: The Guitarist Amplification

Season 3, Episode 8: The Adhesive Duck Deficiency

Season 3, Episode 9: The Vengeance Formulation

Season 3, Episode 10: The Gorilla Experiment

Season 3, Episode 11: The Maternal Congruence

Season 3, Episode 12: The Psychic Vortex

Season 3, Episode 13: The Bozeman Reaction

Season 3, Episode 14: The Einstein Approximation

Season 3, Episode 15: The Large Hadron Collision

Season 3, Episode 16: The Excelsior Acquisition

Season 3, Episode 17: The Precious Fragmentation

Season 3, Episode 18: The Pants Alternative

Season 3, Episode 19: The Wheaton Recurrence

Season 3, Episode 20: The Spaghetti Catalyst

Season 3, Episode 21: The Plimpton Stimulation

Season 3, Episode 22: The Staircase Implementation

Season 3, Episode 23: The Lunar Excitation