Yeah, I think Zodiac is one of the best movies of this century but it's not one that I put on to pep myself up. :)
One movie that I didn't put on my list because it was too new was Once Upon A Time... In Hollywood. I saw it a ton of times in the theater and I love everything about that movie...
It's all movies that I loved as a kid but off the top of my head (alphabetically):
The Breakfast Club
Fast Times At Ridgemont High
Friday The 13th (the first eight movies from Paramount)
Jaws
Star Wars (all of them)
EDIT: Back To The Future