Metroid Prime was the game that made me decide to buy a Gamecube...and sadly, I haven't gotten anywhere in it. Too many good games, too little time. I did beat Metroid Fusion though, and enjoyed that alot. Currently on the GBA front (love my NES themed GBA-SP), I'm at Dracula in Castlevania: Circle of the Moon, but since i'm a Fighter and can't use magic, getting my butt handed to me regularly.

I'm not really sure what my favorite game of all time is, but I do have favorites in each genre...

For RPG, I'd have to pick Super Mario RPG: Legend of the Seven Stars. Fun game, fun theme, it's Mario, you can't go wrong. Runner up, Secret of Mana 3 (yeah, it was only a Japanese game, but I got ports and roms)

For FPS, It's a toss up between Goldeneye and Half-Life, at least for single player. Multiplayer, Goldeneye or Unreal Tournament.

For RTS, Starcraft hands down. Love that game, desperately want a sequel.

For Sports, either Tony Hawk 2 or ESPN NFL 2k5. Haven't played a decent Madden game since '99...

Favorite Star Wars game is also tough. I've beaten and enjoyed Jedi Outcast, Jedi Power Battles (on Dreamcast), and have gotten as far as I could (before bugs and generally just being stuck) in X-Wing, X-Wing Alliance, and Tie-Fighter.

Let's see...currently i'm playing or haven't finished Metroid Prime, Resident Evil (remake), Resident Evil Zero, Super Smash Bros. Melee (I just want the stupid sound test unlocked!!!), Zelda-Ocarina of Time (on GCube, beaten it many times before), GTA3, GTA Vice City, ESPN NFL 2k5 (season), Ninja Gaiden (please, let me get past Level 5...), Dungeon Siege, Red Faction, Skies of Arcadia: Legends (awesome game, both on Dreamcast and Cube), Splinter Cell, Super Star Wars (rom, hard game w/o SNES controller), Unreal Gold, Elite Force 2...and i'm sure there are many others. Little bit here, little bit there...