Yeah...go watch Requiem For A Dream
I don't really know. I used to say Pulp Fiction was my favourite movie...but that was when the only other Tarantino movies I'd seen were Sin City & Inglourious Basterds.
I've now seen Jackie Brown, the two Kill Bills and Reservoir Dogs. And I love all of them...but I think it might be Jackie Brown simply because of the characters. They seem to be more developed, more unpredictable...and it's a lot tenser than the others (though arguably not RD) - you're made to second-guess everyone.
I think I'd go,
1) Jackie Brown
2) Pulp Fiction
3) Reservoir Dogs
4) Inglourious Basterds
5) Kill Bill Vol. 2
6) Sin City
7) Kill Bill Vol. 1
Threaded Mode