1. Boarding
    As I am doing now - people walking past me just inches away
  2. Landing
    Such a bad time that you are not even allowed
  3. Takeoff
    See landing
  4. If they are showing Inception: The first 30 mins of Inception
    It is packed with exposition that you just can't afford to miss
  5. The moment you hit cruising altitude
    Just very obvious to everyone else what is going on
  6. If they are showing The Descendants: The last 30 minutes of The Descendants
    You'll miss an unforgettable scene between George Clooney and Judy Greer that everyone is sure to be talking about