Midnight Madness.
It's MJFox' first movie (pre family ties). Unmatched hardcore 80's action. Pure genius, pure hilarity from start to finish.
Office Space, anything w.Jay/Silent Bob (Clerks, 'strikes back) not mentioned yet.
A Clockwork Orange is a classic, but it's just not all candy. More for a trip, when you want to ride the highs and lows. I approach it like I do the wall.