It's impossible for me to pick just one...so I have to pick about 3 in each genre...lol
So here goes:
Horror (I'm a huge horror fan):
-Scream (series)
-A Nightmare on Elm Street (series, including the remake)
-SAW (series)
Comedy: (This ones impossible to pick just one, so I'll just give a list of some of my favorites)
-Anything with Will Farell (Taladega Nights, Step Brothers, The Other Guys, etc.)
-Idiocracy
-Anything directed by Edgar Wright (Hot Fuzz, Shaun of the Dead, Scott Pilgrim, etc.)
-much much more...
Fantasy:
-The Lovely Bones
-Anything by Tim Burton (Charlie and the Chocolate Factory, Alice in Wonderland, The Nightmare Before Christmas)
-Ink
Sci-Fi:
-The Matrix (trilogy)
-Star Trek (new one)
Parody:
-Scary Movie (series)
-Dance Flick
-Superhero Movie
-Pretty much anything with Leslie Neilson
Musical:
-Chicago
-Sweeny Todd
-RENT
-Hairspray
Anime:
-Anything by Studio Ghibli
-Metropolis
-Paprika
-Tenkokinkreet
Action-Adventure:
-Pirates of the Carribean (series)
-Jumanji
-I dunno, other actiony movies...lol
Card/cheats/con's
-Shade
-House of Games
-Bookies
-The Perfect Score
-(I would include "The Brother's Bloom", but I haven't finished it yet...)
+others
Superhero:
-Watchmen
-Kick-Ass
-Spider Man (series)
-The Incredible Hulk (Edward Norton one)
+more
(Don't know how to categorize these, but they're similar, I guess):
-Fight Club
-Big Nothing
-In Bruges
-Kiss Kiss Bang Bang
Documentary:
-Food Inc.
-Supersize Me
-Jesus Camp
-Root of All Evil? (sort of a doc.)
Mockumentary:
-This is Spinal Tap
-A Mighty Wind
Religious comedy:
-Saved
-Dogma
Romantic/RomCom:
-(500) Days of Summer
-There's Something About Mary
-Along Came Poly
Psychological:
-The Butterfly Effect
-Eternal Sunshine of the Spotless Mind
-Pi
Drugs:
-Charlie Bartlet
-The Chumscrubber
-Requiem for a Dream
Craziness:
-The People Under the Stairs
Exorcism:
-The Exorcism of Emily Rose
-The Last Exorcism
-Blackwater Valley Exorcism
animated (not anime):
-The Simpsons Movie
-Anything by Don Bluth
-most Disney Classics
Pixar:
-The Incredibles
-Up
-Toy Story (series)
-Monsters Inc.
-pretty much all of them...
I watch a lot of movies...so this is only a small taste of what I like...