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The Big Bang Theory Season 2 Episode 20
A fellow comic book enthusiast’s hitting on Penny leads to Leonard and Howard going to a bar’s Ladies’ Night.
Released: 2009-04-13
Serie Name: The Big Bang Theory
Episode Name: The Hofstadter Isotope
Quality: HD
Watch The Big Bang Theory Season 2 Episode 20 Online Free
The Big Bang Theory Season 2 Episode 20 Online Free
Where to watch The Big Bang Theory Season 2 Episode 20
The Big Bang Theory Season 2 Episode 20 movie free online
The Big Bang Theory Season 2 Episode 20 free online
Season 1 - Sep. 24, 2007
- play_arrowEps 1: Pilot
- play_arrowEps 2: The Big Bran Hypothesis
- play_arrowEps 3: The Fuzzy Boots Corollary
- play_arrowEps 4: The Luminous Fish Effect
- play_arrowEps 5: The Hamburger Postulate
- play_arrowEps 6: The Middle-Earth Paradigm
- play_arrowEps 7: The Dumpling Paradox
- play_arrowEps 8: The Grasshopper Experiment
- play_arrowEps 9: The Cooper-Hofstadter Polarization
- play_arrowEps 10: The Loobenfeld Decay
- play_arrowEps 11: The Pancake Batter Anomaly
- play_arrowEps 12: The Jerusalem Duality
- play_arrowEps 13: The Bat Jar Conjecture
- play_arrowEps 14: The Nerdvana Annihilation
- play_arrowEps 15: The Pork Chop Indeterminacy
- play_arrowEps 16: The Peanut Reaction
- play_arrowEps 17: The Tangerine Factor
Season 2 - Sep. 22, 2008
- play_arrowEps 1: The Bad Fish Paradigm
- play_arrowEps 2: The Codpiece Topology
- play_arrowEps 3: The Barbarian Sublimation
- play_arrowEps 4: The Griffin Equivalency
- play_arrowEps 5: The Euclid Alternative
- play_arrowEps 6: The Cooper-Nowitzki Theorem
- play_arrowEps 7: The Panty Piñata Polarization
- play_arrowEps 8: The Lizard-Spock Expansion
- play_arrowEps 9: The White Asparagus Triangulation
- play_arrowEps 10: The Vartabedian Conundrum
- play_arrowEps 11: The Bath Item Gift Hypothesis
- play_arrowEps 12: The Killer Robot Instability
- play_arrowEps 13: The Friendship Algorithm
- play_arrowEps 14: The Financial Permeability
- play_arrowEps 15: The Maternal Capacitance
- play_arrowEps 16: The Cushion Saturation
- play_arrowEps 17: The Terminator Decoupling
- play_arrowEps 18: The Work Song Nanocluster
- play_arrowEps 19: The Dead Hooker Juxtaposition
- play_arrowEps 20: The Hofstadter Isotope
- play_arrowEps 21: The Vegas Renormalization
- play_arrowEps 22: The Classified Materials Turbulence
- play_arrowEps 23: The Monopolar Expedition
Season 3 - Sep. 21, 2009
- play_arrowEps 1: The Electric Can Opener Fluctuation
- play_arrowEps 2: The Jiminy Conjecture
- play_arrowEps 3: The Gothowitz Deviation
- play_arrowEps 4: The Pirate Solution
- play_arrowEps 5: The Creepy Candy Coating Corollary
- play_arrowEps 6: The Cornhusker Vortex
- play_arrowEps 7: The Guitarist Amplification
- play_arrowEps 8: The Adhesive Duck Deficiency
- play_arrowEps 9: The Vengeance Formulation
- play_arrowEps 10: The Gorilla Experiment
- play_arrowEps 11: The Maternal Congruence
- play_arrowEps 12: The Psychic Vortex
- play_arrowEps 13: The Bozeman Reaction
- play_arrowEps 14: The Einstein Approximation
- play_arrowEps 15: The Large Hadron Collision
- play_arrowEps 16: The Excelsior Acquisition
- play_arrowEps 17: The Precious Fragmentation
- play_arrowEps 18: The Pants Alternative
- play_arrowEps 19: The Wheaton Recurrence
- play_arrowEps 20: The Spaghetti Catalyst
- play_arrowEps 21: The Plimpton Stimulation
- play_arrowEps 22: The Staircase Implementation
- play_arrowEps 23: The Lunar Excitation
Season 4 - Sep. 23, 2010
- play_arrowEps 1: The Robotic Manipulation
- play_arrowEps 2: The Cruciferous Vegetable Amplification
- play_arrowEps 3: The Zazzy Substitution
- play_arrowEps 4: The Hot Troll Deviation
- play_arrowEps 5: The Desperation Emanation
- play_arrowEps 6: The Irish Pub Formulation
- play_arrowEps 7: The Apology Insufficiency
- play_arrowEps 8: The 21-second Excitation
- play_arrowEps 9: The Boyfriend Complexity
- play_arrowEps 10: The Alien Parasite Hypothesis
- play_arrowEps 11: The Justice League Recombination
- play_arrowEps 12: The Bus Pants Utilization
- play_arrowEps 13: The Love Car Displacement
- play_arrowEps 14: The Thespian Catalyst
- play_arrowEps 15: The Benefactor Factor
- play_arrowEps 16: The Cohabitation Formulation
- play_arrowEps 17: The Toast Derivation
- play_arrowEps 18: The Prestidigitation Approximation
- play_arrowEps 19: The Zarnecki Incursion
- play_arrowEps 20: The Herb Garden Germination
- play_arrowEps 21: The Agreement Dissection
- play_arrowEps 22: The Wildebeest Implementation
- play_arrowEps 23: The Engagement Reaction
- play_arrowEps 24: The Roommate Transmogrification
Season 5 - Sep. 22, 2011
- play_arrowEps 1: The Skank Reflex Analysis
- play_arrowEps 2: The Infestation Hypothesis
- play_arrowEps 3: The Pulled Groin Extrapolation
- play_arrowEps 4: The Wiggly Finger Catalyst
- play_arrowEps 5: The Russian Rocket Reaction
- play_arrowEps 6: The Rhinitis Revelation
- play_arrowEps 7: The Good Guy Fluctuation
- play_arrowEps 8: The Isolation Permutation
- play_arrowEps 9: The Ornithophobia Diffusion
- play_arrowEps 10: The Flaming Spittoon Acquisition
- play_arrowEps 11: The Speckerman Recurrence
- play_arrowEps 12: The Shiny Trinket Maneuver
- play_arrowEps 13: The Recombination Hypothesis
- play_arrowEps 14: The Beta Test Initiation
- play_arrowEps 15: The Friendship Contraction
- play_arrowEps 16: The Vacation Solution
- play_arrowEps 17: The Rothman Disintegration
- play_arrowEps 18: The Werewolf Transformation
- play_arrowEps 19: The Weekend Vortex
- play_arrowEps 20: The Transporter Malfunction
- play_arrowEps 21: The Hawking Excitation
- play_arrowEps 22: The Stag Convergence
- play_arrowEps 23: The Launch Acceleration
- play_arrowEps 24: The Countdown Reflection
Season 6 - Sep. 27, 2012
- play_arrowEps 1: The Date Night Variable
- play_arrowEps 2: The Decoupling Fluctuation
- play_arrowEps 3: The Higgs Boson Observation
- play_arrowEps 4: The Re-Entry Minimization
- play_arrowEps 5: The Holographic Excitation
- play_arrowEps 6: The Extract Obliteration
- play_arrowEps 7: The Habitation Configuration
- play_arrowEps 8: The 43 Peculiarity
- play_arrowEps 9: The Parking Spot Escalation
- play_arrowEps 10: The Fish Guts Displacement
- play_arrowEps 11: The Santa Simulation
- play_arrowEps 12: The Egg Salad Equivalency
- play_arrowEps 13: The Bakersfield Expedition
- play_arrowEps 14: The Cooper/Kripke Inversion
- play_arrowEps 15: The Spoiler Alert Segmentation
- play_arrowEps 16: The Tangible Affection Proof
- play_arrowEps 17: The Monster Isolation
- play_arrowEps 18: The Contractual Obligation Implementation
- play_arrowEps 19: The Closet Reconfiguration
- play_arrowEps 20: The Tenure Turbulence
- play_arrowEps 21: The Closure Alternative
- play_arrowEps 22: The Proton Resurgence
- play_arrowEps 23: The Love Spell Potential
- play_arrowEps 24: The Bon Voyage Reaction
Season 7 - Sep. 26, 2013
- play_arrowEps 1: The Hofstadter Insufficiency
- play_arrowEps 2: The Deception Verification
- play_arrowEps 3: The Scavenger Vortex
- play_arrowEps 4: The Raiders Minimization
- play_arrowEps 5: The Workplace Proximity
- play_arrowEps 6: The Romance Resonance
- play_arrowEps 7: The Proton Displacement
- play_arrowEps 8: The Itchy Brain Simulation
- play_arrowEps 9: The Thanksgiving Decoupling
- play_arrowEps 10: The Discovery Dissipation
- play_arrowEps 11: The Cooper Extraction
- play_arrowEps 12: The Hesitation Ramification
- play_arrowEps 13: The Occupation Recalibration
- play_arrowEps 14: The Convention Conundrum
- play_arrowEps 15: The Locomotive Manipulation
- play_arrowEps 16: The Table Polarization
- play_arrowEps 17: The Friendship Turbulence
- play_arrowEps 18: The Mommy Observation
- play_arrowEps 19: The Indecision Amalgamation
- play_arrowEps 20: The Relationship Diremption
- play_arrowEps 21: The Anything Can Happen Recurrence
- play_arrowEps 22: The Proton Transmogrification
- play_arrowEps 23: The Gorilla Dissolution
- play_arrowEps 24: The Status Quo Combustion
Season 8 - Sep. 22, 2014
- play_arrowEps 1: The Locomotion Interruption
- play_arrowEps 2: The Junior Professor Solution
- play_arrowEps 3: The First Pitch Insufficiency
- play_arrowEps 4: The Hook-Up Reverberation
- play_arrowEps 5: The Focus Attenuation
- play_arrowEps 6: The Expedition Approximation
- play_arrowEps 7: The Misinterpretation Agitation
- play_arrowEps 8: The Prom Equivalency
- play_arrowEps 9: The Septum Deviation
- play_arrowEps 10: The Champagne Reflection
- play_arrowEps 11: The Clean Room Infiltration
- play_arrowEps 12: The Space Probe Disintegration
- play_arrowEps 13: The Anxiety Optimization
- play_arrowEps 14: The Troll Manifestation
- play_arrowEps 15: The Comic Book Store Regeneration
- play_arrowEps 16: The Intimacy Acceleration
- play_arrowEps 17: The Colonization Application
- play_arrowEps 18: The Leftover Thermalization
- play_arrowEps 19: The Skywalker Incursion
- play_arrowEps 20: The Fortification Implementation
- play_arrowEps 21: The Communication Deterioration
- play_arrowEps 22: The Graduation Transmission
- play_arrowEps 23: The Maternal Combustion
- play_arrowEps 24: The Commitment Determination
Season 9 - Sep. 21, 2015
- play_arrowEps 1: The Matrimonial Momentum
- play_arrowEps 2: The Separation Oscillation
- play_arrowEps 3: The Bachelor Party Corrosion
- play_arrowEps 4: The 2003 Approximation
- play_arrowEps 5: The Perspiration Implementation
- play_arrowEps 6: The Helium Insufficiency
- play_arrowEps 7: The Spock Resonance
- play_arrowEps 8: The Mystery Date Observation
- play_arrowEps 9: The Platonic Permutation
- play_arrowEps 10: The Earworm Reverberation
- play_arrowEps 11: The Opening Night Excitation
- play_arrowEps 12: The Sales Call Sublimation
- play_arrowEps 13: The Empathy Optimization
- play_arrowEps 14: The Meemaw Materialization
- play_arrowEps 15: The Valentino Submergence
- play_arrowEps 16: The Positive Negative Reaction
- play_arrowEps 17: The Celebration Experimentation
- play_arrowEps 18: The Application Deterioration
- play_arrowEps 19: The Solder Excursion Diversion
- play_arrowEps 20: The Big Bear Precipitation
- play_arrowEps 21: The Viewing Party Combustion
- play_arrowEps 22: The Fermentation Bifurcation
- play_arrowEps 23: The Line Substitution Solution
- play_arrowEps 24: The Convergence Convergence
Season 10 - Sep. 19, 2016
- play_arrowEps 1: The Conjugal Conjecture
- play_arrowEps 2: The Military Miniaturization
- play_arrowEps 3: The Dependence Transcendence
- play_arrowEps 4: The Cohabitation Experimentation
- play_arrowEps 5: The Hot Tub Contamination
- play_arrowEps 6: The Fetal Kick Catalyst
- play_arrowEps 7: The Veracity Elasticity
- play_arrowEps 8: The Brain Bowl Incubation
- play_arrowEps 9: The Geology Elevation
- play_arrowEps 10: The Property Division Collision
- play_arrowEps 11: The Birthday Synchronicity
- play_arrowEps 12: The Holiday Summation
- play_arrowEps 13: The Romance Recalibration
- play_arrowEps 14: The Emotion Detection Automation
- play_arrowEps 15: The Locomotion Reverberation
- play_arrowEps 16: The Allowance Evaporation
- play_arrowEps 17: The Comic-Con Conundrum
- play_arrowEps 18: The Escape Hatch Identification
- play_arrowEps 19: The Collaboration Fluctuation
- play_arrowEps 20: The Recollection Dissipation
- play_arrowEps 21: The Separation Agitation
- play_arrowEps 22: The Cognition Regeneration
- play_arrowEps 23: The Gyroscopic Collapse
- play_arrowEps 24: The Long Distance Dissonance
Season 11 - Sep. 25, 2017
- play_arrowEps 1: The Proposal Proposal
- play_arrowEps 2: The Retraction Reaction
- play_arrowEps 3: The Relaxation Integration
- play_arrowEps 4: The Explosion Implosion
- play_arrowEps 5: The Collaboration Contamination
- play_arrowEps 6: The Proton Regeneration
- play_arrowEps 7: The Geology Methodology
- play_arrowEps 8: The Tesla Recoil
- play_arrowEps 9: The Bitcoin Entanglement
- play_arrowEps 10: The Confidence Erosion
- play_arrowEps 11: The Celebration Reverberation
- play_arrowEps 12: The Matrimonial Metric
- play_arrowEps 13: The Solo Oscillation
- play_arrowEps 14: The Separation Triangulation
- play_arrowEps 15: The Novelization Correlation
- play_arrowEps 16: The Neonatal Nomenclature
- play_arrowEps 17: The Athenaeum Allocation
- play_arrowEps 18: The Gates Excitation
- play_arrowEps 19: The Tenant Disassociation
- play_arrowEps 20: The Reclusive Potential
- play_arrowEps 21: The Comet Polarization
- play_arrowEps 22: The Monetary Insufficiency
- play_arrowEps 23: The Sibling Realignment
- play_arrowEps 24: The Bow Tie Asymmetry
Season 12 - Sep. 24, 2018
- play_arrowEps 1: The Conjugal Configuration
- play_arrowEps 2: The Wedding Gift Wormhole
- play_arrowEps 3: The Procreation Calculation
- play_arrowEps 4: The Tam Turbulence
- play_arrowEps 5: The Planetarium Collision
- play_arrowEps 6: The Imitation Perturbation
- play_arrowEps 7: The Grant Allocation Derivation
- play_arrowEps 8: The Consummation Deviation
- play_arrowEps 9: The Citation Negation
- play_arrowEps 10: The VCR Illumination
- play_arrowEps 11: The Paintball Scattering
- play_arrowEps 12: The Propagation Proposition
- play_arrowEps 13: The Confirmation Polarization
- play_arrowEps 14: The Meteorite Manifestation
- play_arrowEps 15: The Donation Oscillation
- play_arrowEps 16: The D & D Vortex
- play_arrowEps 17: The Conference Valuation
- play_arrowEps 18: The Laureate Accumulation
- play_arrowEps 19: The Inspiration Deprivation
- play_arrowEps 20: The Decision Reverberation
- play_arrowEps 21: The Plagiarism Schism
- play_arrowEps 22: The Maternal Conclusion
- play_arrowEps 23: The Change Constant / The Stockholm Syndrome
- play_arrowEps 24: Unraveling the Mystery: A Big Bang Farewell