Action : Last Action Hero (movie)
Adventure : Lord of the Rings 1-3 (movie)
Horror : Childs Play 1 and 2 (movie)
Comedy : Brotherly Love, ALF (tv show)
Romantic-Comedy : (none)
Animated : TMNT (cartoon)
SciFi : ST Voyager (tv show), Lost in Space (movie)
Computer Generated : Finding Nemo (movie)

Feel free to add more to the list if you wish.

Action: Bullitt
Adventure: Indiana Jones & The Last Crusade
Horror: Roger & Me
Comedy: Take The Money And Run
Romantic Comedy: Harold & Maude
Animated: Nightmare Before Christmas, The
Sci-Fi: Bladerunner or maybe Santa Claus Conquers The Martians..
Computer Generated:
Musical: The Who's Tommy

Action: Mission Impossible 2
Adventure: not sure, so im gonna put Armageddon
Horror: The Ring
Comedy: Napoleon Dynamite
Romantic-Comety: My Best Friend's wedding
Animated: Simpsons
Computer Generated: Shrek and Finding Nemo
Musical: Chicago

Action: Jurassic Park
Adventure: The Lord of the Rings
Horror: Texas Chainsaw Massacre
Comedy: American Pie Trilogy
Animated: The Lion King
Computer Generated: Toy Story
Sci Fi: Alien

Action: Terminator 2 - ???
Adventure: I am putting the Original Planet of the Apes, in this category _ ???
Horror: Jason VI - Twilight Zone, one of my favs ever, rod serling RIP
Comedy: Christmas Vacation - Cheers or i love lucy
Animated: ??? - Family guy
CG: Space Jam was kind of cpu - ???
Sci Fi: ??? - Twilight Zone - great show deserve the 2 time post
Other: my fav movie ever. 12 angry men - ???

Action - Commando
Adventure - Brotherhood of the Wolf
Horror - Halloween H20
Comedy - Meet the Parents
Animated - Lion King
CG - Ice Age
Romantic Com - Love Actually
Musical - Grease
Sci-Fi - Aliens, Predator

Action - Miracles: The Canton Godfather (I guessed martial arts counted here)
Adventure - Dogma
Horror - The Devil Rides Out (It's a Hammer Horror classic. Not very scary, but so cool)
Comedy - Orgazmo
Animated - The Nightmare Before Christmas
CG - Toy Story all the way.
RomCom - Chasing Amy
Musical - Grease
Sci-Fi - Star Wars IV, V & VI

Movie
Action // Adventure: The Bourne Identity
Horror: Saw
Comedy: Anchorman and Dogma
Romantic Comedy: In Good Company
Sci-Fi: The Matrix
Thriller: Fight Club
Computer Animated: Jurassic Park (does it count?)

TV
Action : ER
Late Night: Late Night with Conan O'Brien, SNL
Comedy: That 70's Show, Scrubs
Romantic Comedy: Commited
Animated: Simpsons, Family Guy, Futurama
Sci-Fi: The X-Files
Crime: CSI, Law and Order, Medium
Game Show: Jeopardy!