Battle Royale
Japanese film very nuts and entertaining. It takes some royal rumble principles and applies it to real life. Very bloody and Tarentino like.
I may give the Harry Potter franchise another go tonight in wake of the new movie. I don't own them so I'll have to rent. I remember seeing the first two in the cinema and they were pretty cool, but I never got around to watching the rest of them.
The third one's my favorite so you should definitely check it out.