Add your suggestions!
  1. Candice Bergen laughing in Carnal Knowledge.
    This laugh is my favorite laugh in film history.
  2. Ray Liotta laughing in Goodfellas
    Laughter is better when Joe Pesci gets angry about it.
  3. The dinner scene in IT
    Right before everything goes wrong and there's an eyeball in the fortune cookies.
  4. Tom Hanks in The Money Pit
    Everything explodes and the bathtub falls through the floor. T. Hanks mastered the movie laugh.
  5. Rachel McAdams laughing in The Vow
    This is not my favorite movie but there's a moment in a dinner scene where Rachel spits something into her own hair and she and Channing Tatum laugh so hard you can tell it was a mistake and an authentic redeeming moment.
  6. Julia Roberts in Pretty Woman
    Obviously, the scene with the necklace box trick. Too iconic to not mention.
    Suggested by @sally
  7. Also, Randy Quaid, Jack Nicholson and Otis Young in "The Last Detail"
    Suggested by @miggles36