The Best Big Bang Theory Episodes of All Time

After 12 seasons, there are so many good episodes of The Big Bang Theory, but which ones really stand out? Do you like "The Bath Item Gift Hypothesis" the best, or is "The Excelsior Acquisition" your favorite episode of The Big Bang Theory? To determine once and for all what the best episodes of The Big Bang Theory are, let's rank every The Big Bang Theory episode from best to worst on this list of the best Big Bang Theory episodes, as voted on by other fans of the series. The Big Bang Theory was a popular American sitcom on CBS. The show received countless awards and remains to be one of the most dominant television programs of the last 25 years. With so many memorable episodes of the show, it's hard to trust just one person's opinion of what the top The Big Bang Theory episodes of all time are.

Fans of The Big Bang Theory are extremely passionate about the show, and there is often debate over which episodes are better than others. That's why this list exists- so you can vote for your favorites and we can find out once and for all what everyone thinks the best episode is. Episodes include everything from "The Love Car Displacement" to "The Vegas Renormalization." What are the best The Big Bang episodes of all time? Look below and find out and vote your favorites to the top! Then check out the best Big Bang Theory holiday episodes.

Photo: The Big Bang Theory / CBS
Ranked by
  • The Staircase Implementation
    1

    The Staircase Implementation

    May 17, 2010
    202 votes

    Season 3, Episode 22

    Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
  • The Bath Item Gift Hypothesis
    2

    The Bath Item Gift Hypothesis

    December 15, 2008
    185 votes
    • Series: The Big Bang Theory

    Season 2, Episode 11

    Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
  • The Adhesive Duck Deficiency
    3

    The Adhesive Duck Deficiency

    November 16, 2009
    73 votes
    • Series: The Big Bang Theory

    Season 3, Episode 8

    With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
  • The Einstein Approximation
    4
    132 votes
    • Series: The Big Bang Theory

    Season 3, Episode 14

    Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
  • The Pants Alternative
    5

    The Pants Alternative

    March 22, 2010
    47 votes

    Season 3, Episode 18

    Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
  • The Barbarian Sublimation
    6

    The Barbarian Sublimation

    October 6, 2008
    105 votes
    • Series: The Big Bang Theory

    Season 2, Episode 3

    Sheldon creates a monster when he introduces Penny to online gaming.