What 5 movies should I rent this weekend?

I have a 4 day weekend off from work and decided to spend some quiet tine home alone. I need a list of 5 great movies to rent. I am male, 21 yrs old, so keep that in mind. I like all genres but prefer comedy (smarter comedies, nothing retarded), documentaries, and horror films (not nightmare on elm st. style, something truly terrifying) thank you, best answer gets 10 pts.