You are viewing a list of 1 The Big Bang Theory episode featuring "Classified" in their title.
  • The Big Bang Theory

    Season 2, Episode 22 - The Classified Materials Turbulence
    Aired May 4, 2009

    After Howard designs a special toilet for the International Space Station, the guys rush to develop a fix to stop the toilet malfunctioning in space. Meanwhile, Penny goes out on a second date with Stuart from the comic book store. When Leonard gets the impression things went awry on Penny and Stuart's date, he is thrilled to learn the reason why.