Just as a joke before we begin, here's some of my "favorites":
^ A gun held to Ben Affleck's head. How could I not like it?
^ If you recognize what movie this is from, I sympathize with you. I'm pissed it was full-screen though, I thought I bough the widescreen. Grrr. Nice Sphinx AT 380s though.
^I don't get what's so funny about this screencap. Compared to the rest of the movie, this scene was pretty normal.
I don't feel creative enough to find more now, so enjoy.
This sounds like a competition though, so I'll wait until we all agree this is okay before finding my top 10 shots.