Not in any particular order, but I can watch any of these at any time, and they NEVER fail to put a smile on my face. Perfect entertainment, all of 'em.
- House on Haunted Hill (Either version)
- The Frighteners
- Office Space
- Any of the Pink Panther flicks (especially Shot in the Dark)
- Pit and the Pendulum
- Casablanca
- Batman: The Movie (1966)
- Sweeney Todd: The Demon Barber of Fleet Street
- Wall-E
- The Dark Knight
Hard to limit myself to 10, really. Could easily fill another list.