Justin makes me feel like my game collection is crappy... I mean, some of mine are even missing cases! I don't keep them in a nice, finely-built shelf, but on top of my closet shelf (Cube, GBA, DS, and PS2) or in a disorganised cabinet (NES, PSone, and N64).
Oh well.
(NES)
Pacman
Super Mario Bros./Duck Hunt
Super Mario Bros. 2
Super Mario Bros. 3
Donkey Kong Classics
Fester's Quest
Ninja Gaiden
Kung Fu
Pinball
DuckTales
Tetris
Mario Bros. (The original arcade game cartridge! w00t!)
Castlevania 2: Simon's Quest
Batman
Kirby's Adventure
(N64)
Super Mario 64
Mystical Ninja Goemon
ClayFighter 63 1/3
Killer Instinct Gold
Diddy Kong Racing
Donkey Kong 64
Starfox 64
Goemon's Great Adventure
Resident Evil 2
Castlevania: Legacy of Darkness
Banjo-Kazooie
Banjo-Tooie
Earthworm Jim 3D
Mario Tennis
(PS1)
Castlevania: Symphony of the Night
Final Fantasy VII
Final Fantasy VIII
No One Can Stop Mr. Domino!!!
Chrono Cross
Silent Hill
Brave Fencer Musashi
(GBA)
Super Mario Advance 4: Super Mario Bros. 3
Wario Land 4
Wario Ware Inc.: MEGA MICROGAME$
Riviera: The Promised Land
Castlevania: Aria of Sorrow
Klonoa: Empire of Dreams
Mario & Luigi: Superstar Saga
Fire Emblem
Golden Sun
Golden Sun 2: The Lost Age
NES Classics Reborn! Ice Climber
Super Puzzle Fighter 2: Turbo
Wario Ware TWISTED!
Kingdom Hearts: Chain of Memories
(PS2)
Silent Hill 2
Kingdom Hearts
Shadow of the Colossus
Kingdom Hearts II
(Gamecube)
Super Mario Sunshine
Paper Mario: The Thousand Year Door
Capcom vs. SNK 2: Extreme Offense
Super Monkey Ball
Skies of Arcadia Legends
Viewtiful Joe
Super Smash Bros. Melee
Tales of Symphonia
Luigi's Mansion
Pikmin
Pikmin 2
F-Zero GX
Shadow the Hedgehog
Sonic Heroes
Baten Kaitos: Eternal Wings and the Lost Ocean
Ultimate Spiderman
Sonic Mega Collection
Mega Man: Anniversary Collection
Chibi-Robo: Plug Into Adventure!
Lord of the Rings: Return of the King
Metal Gear Solid: The Twin Snakes
Eternal Darkness: Sanity's Requiem
Killer7
Resident Evil
Resident Evil Zero
Resident Evil 4
Donkey Konga
Starfox Assault
(DS)
Super Mario 64 DS
The Rub Rabbits!
Castlevania: Dawn of Sorrow
Animal Crossing: Wild World
Mario Kart DS
Wario Ware Touched! (Ashley pwns!)
Sonic Rush
Jump Superstars
Tetris DS
huff, huff...
OK, that's... 101 games. I'm also looking into picking up pretty cheap NES and N64 games at local stores (Particularly Zelda 2, Goldeneye, and Ghosts n Goblins).
EDIT: Haha, finally managed to get around to ditching Platoon and Sonic Adventure. Man, those two were pretty rank...