I wanted to put my favorites on here, but the truth is that you only need to see one movie, ever. Save The Green Planet.
Here's a preview
http://www.youtube.com/watch?v=3NLbDgyMusk
This is the best movie I have ever seen. I recommend that you buy it, and watch it as many times as you can. It just gets better the more times you watch it. You'll never see anything like this unless someone makes a remake.
Everybody should watch this. And at the risk of moderators and such please send me a message so that I can help you watch it. Note: This film did horribly bad in Korea, it's country of origin, because of it's awful advertising. They advertised this as a romantic comedy. Hah hah it's not. and it is. it's genre free and it is what it is. So, as I said if you can't find a way to watch this, just email me and you'll find a way.
Here's a review for it by someone other than me
possible spoiler's here at that link
http://www.youtube.com/watch?v=U0tDwuZySao
oh yeah, I joined this forum so that I could post this.