Don’t take too long to think about it: Fifteen movies you’ve seen that will always stick with you. First fifteen you can recall in no more than 15 minutes.

In no particular order:
1 ghostbusters
2 mystic river
3 men in black
4 dune
5 aliens
6 close encounters
7 terminator
8 Local hero
9 Apollo 11
10 AI
11 Hero
12 Star Trek IV
13 The Thing
14 Spiderman
15 the Matrix
16 the animatrix
…gosh that was just about 3 minutes…
Oh and Blues Brothers and Trains, Planes, and Automobiles!