I own at:
Total Annihilation
Bungie Games (except for Myth series)
System Shock
Quake-like games
Street Fighter Alpha 3
The King of Fighters
Games with really cool music
Falcon 4.0 - Hella good sim.
I suck ass at:
Puzzlegames that aren't tetris
Any VS. Series game. All of them. Every Single freaking one. They all are evil, and I am cursed to be defeated by the lowest scrubs if I play one of these games.
Metal Slug series (can't beat any without 5 billion continues...)
Dancing games (WORST IDEA EVER!!! I HATE THEM WITH A VENGEANCE SINCE THE ARCADE AT THE MALL PUT PARA PARA DANCING RIGHT FREAKING BESIDE THE ALPHA 3 MACHINE!!! BASTARDS!!!!).
Games with awful music (like aforementioned dancing games, as well as videogames based upon pop singers).
Games on consoles newer than SNES.
Games with really bad control schemes.
Sports games. Yes, even Blades of Steel, tecmo bowl and Ice Hockey.
Contra and Castlevania.
Ninja Gaiden.
Games made by christians (the cd's burn my unholy flesh)
I suck at a lot more games than I am good at, but I only get really good at games I like. Unfortunatly I am very picky. Also, I've been a PC gamer for most of my life, except for my snes (most wonderful console ever made... present company excluded of course...). Because of this I really got good at PC style games, especially fps games and since my Dad was a pilot, I just got good at combat flight simulators from playing them so much.