Oh, I'm gonna say great movies of the 20th and 21st century. I'm going to try and list some overlooked movie than some obvious ones, like every tarantino movie for example, do I even have to mention those?
Metal: A Headbanger's Journey
Dawn Of The Dead
Martin
Donnie Darko
Full Metal Jacket
In Bruges
Frailty
Ghost Dog - The Way of the Samurai
In the Mouth of Madness
Vanilla Sky (This seems to be a love or hate, and yeah I know it's a remake and I don't care to see the original because I enjoyed this one so much)
Being John Malkovich
Adaptation (The whole concept of the movie was fucking brilliant, and it seems a lot of people didn't understand it)
Office Space
Superbad (I would have to vote this as the funniest movie I've ever seen, I was fucking dying through the whole thing)