Mostly Black Comedies. In no particular order:
Four Rooms - an absolute howler. Quentin Tarantino wrote portions and stars in it.
Pulp Fiction - nothing I can say about it that hasn't been said already
Trainspotting - different... very different. And it's wierd seeing Ewan MacGregor (The young Obi-Wan Jedi) playing the role of a debased heroin addict.
Fight Club - Awesome!!! Totally cool. I like the single frame subliminal stuff they stuck in there. Highly under-rated.
The Machinist - Awesome again.
Memento - Didn't care for it much. Very difficult to follow.
The Game - Another outstanding flick. Screws with your mind delightfully.
Grosse Point Blank - Funny, but too sappy.
Fargo - Too funny.
High Fidelity - I like John Cusack, but it just wasn't funny enough.
Reservoir Dogs - Grim, but cool.
Snatch - Awesomely funny. Guy Ritchie kicked butt on this film.
Lock stock and two smoking barrels - Funny, but not as good as snatch. Same director.
Very Bad Things - I loved this one! (and felt guilty for enjoying a grisly movie so much)
Panic Room - A bit predictable. I liked Dwight Yoakam as a villain though.
Bad Santa - ... a tough one to laugh at, but it has its moments :)
Pushing tin - same as above.