Agreed.
Original Star Wars movies > Prequels
I sorta pretend the prequels don't exist, unless it's to make fun of them.

Here's a link to some reviews of those Star Wars movies. Absolutely hilarious! He also reviews the TNG Star Trek movies, which are equally as funny.

I recommend watching them all.
As for my favourite film, it's so hard to choose. I'll post my top five:
1. Star Trek II: The Wrath of Khan
2. Heat
3. 2001: A Space Odyssey
4. Alien/Aliens (OK. I'm cheating here, but I can't choose one over the other.

)
5. Pulp Fiction
That was a quick and rough list, but fairly accurate. Maybe Braveheart should be in there, too.