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The Big Bang Theory

Season 4

80%91%
This season the Big Bang gang’s romantic universe expands. On the rebound from Penny, Leonard falls into the arms of Raj’s sister Priya. Sheldon gets a girlfriend, or rather a friend who is a girl: Amy, a dour neurobiologist who declares herself besties with Penny. Howard and Bernadette heat up. And so do Raj and Bernadette (at least in Raj’s Bollywood daydream).
Where to Watch Season 4
24 Episodes
  • The Robotic Manipulation
    E1
    The Robotic ManipulationEpisode 1
  • The Cruciferous Vegetable Amplification
    E2
    The Cruciferous Vegetable AmplificationEpisode 2
  • The Zazzy Substitution
    E3
    The Zazzy SubstitutionEpisode 3
  • The Hot Troll Deviation
    E4
    The Hot Troll DeviationEpisode 4
  • The Desperation Emanation
    E5
    The Desperation EmanationEpisode 5
  • The Irish Pub Formulation
    E6
    The Irish Pub FormulationEpisode 6
  • The Apology Insufficiency
    E7
    The Apology InsufficiencyEpisode 7
  • The 21-Second Excitation
    E8
    The 21-Second ExcitationEpisode 8
  • The Boyfriend Complexity
    E9
    The Boyfriend ComplexityEpisode 9
  • The Alien Parasite Hypothesis
    E10
    The Alien Parasite HypothesisEpisode 10
  • The Justice League Recombination
    E11
    The Justice League RecombinationEpisode 11
  • The Bus Pants Utilization
    E12
    The Bus Pants UtilizationEpisode 12
  • The Love Car Displacement
    E13
    The Love Car DisplacementEpisode 13
  • The Thespian Catalyst
    E14
    The Thespian CatalystEpisode 14
  • The Benefactor Factor
    E15
    The Benefactor FactorEpisode 15
  • The Cohabitation Formulation
    E16
    The Cohabitation FormulationEpisode 16
  • The Toast Derivation
    E17
    The Toast DerivationEpisode 17
  • The Prestidigitation Approximation
    E18
    The Prestidigitation ApproximationEpisode 18
  • The Zarnecki Incursion
    E19
    The Zarnecki IncursionEpisode 19
  • The Herb Garden Germination
    E20
    The Herb Garden GerminationEpisode 20
  • The Agreement Dissection
    E21
    The Agreement DissectionEpisode 21
  • The Wildebeest Implementation
    E22
    The Wildebeest ImplementationEpisode 22
  • The Engagement Reaction
    E23
    The Engagement ReactionEpisode 23
  • The Roommate Transmogrification
    E24
    The Roommate TransmogrificationEpisode 24
Cast of Season 4
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali
  • Melissa RauchBernadette Rostenkowski
  • Mayim BialikAmy Farrah Fowler
Season 4 Reviews
Watch Season 4 Videos
  • The Big Bang Theory: Season 4
    The Big Bang Theory: Season 4Trailer
  • The Big Bang Theory: Penny
    The Big Bang Theory: PennyBehind the Scenes
  • The Big Bang Theory: Behind The Scenes
    The Big Bang Theory: Behind The ScenesBehind the Scenes
  • The Big Bang Theory: The Boyfriend Complexity
    The Big Bang Theory: The Boyfriend ComplexityScene
 
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