• Air date: 24 Sep '07 17 episodes
      The first season of the American sitcom The Big Bang Theory was originally aired on CBS from September 24, 2007, to May 19, 2008, over 17 episodes. An unaired pilot also exists. The Season 1 DVD came without a gag reel and is, so far, the only Big Bang Theory DVD set not to have one. The reissued Blu-ray, was released July 10, 2012, and includes a gag reel that is exclusive to the set. The episodes on Blu-ray are all in remastered surround sound, whereas the DVD version had stereo.
  • List of Episodes (17)
    • 1. Pilot

      24 Sep '07
      Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
    • 2. The Big Bran Hypothesis

      01 Oct '07
      Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
    • 3. The Fuzzy Boots Corollary

      08 Oct '07
      Leonard asks a woman out after he finds out that Penny is seeing someone.
    • 4. The Luminous Fish Effect

      14 Oct '07
      Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
    • 5. The Hamburger Postulate

      22 Oct '07
      Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
    • 6. The Middle Earth Paradigm

      29 Oct '07
      Penny hosts a Hallowe'en party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
    • 7. The Dumpling Paradox

      05 Nov '07
      With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
    • 8. The Grasshopper Experiment

      12 Nov '07
      Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
    • 9. The Cooper-Hofstadter Polarization

      17 Mar '08
      When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard, and Penny's intervention only exacerbates the situation.
    • 10. The Loobenfeld Decay

      24 Mar '08
      Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
    • 11. The Pancake Batter Anomaly

      31 Mar '08
      With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn't a clue what she's in for.
    • 12. The Jerusalem Duality

      14 Apr '08
      With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
    • 13. The Bat Jar Conjecture

      21 Apr '08
      Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.
    • 14. The Nerdvana Annihilation

      28 Apr '08
      When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
    • 15. The Pork Chop Indeterminacy

      05 May '08
      The rest of the gang fall for Sheldon's twin sister, and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
    • 16. The Peanut Reaction

      12 May '08
      Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
    • 17. The Tangerine Factor

      19 May '08
      Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.