I'll just go through my steam games...
-Aliens vs. Predator (2010) hated the alien side
-Batman Arkham asylum GOTY no real reason
-Borderlands terrible game
-Crysis lost interest about half way through
-Crysis warhead: same as crysis, but got almost 2/3's through
-Dead space: not a fan, didn't scare me at all, and the game play was bleh
-Dragon age: origins to much time chatting with npc's, not enough killing stuff
-Far Cry 2 villages respawned so quickly it got irritating quick
-Metro 2033, it seems all the eastern european/russian fps/rpg games bore me after a few hours for some reason I cant quite put my finger on.
-Mirrors edge: had a jump that took 309203920 tries to make it, finally made it, in my celebration i fell down, tried it 2032030 times until I got pissed and uninstalled.
-Red faction guerrilla, quite boring, 3rd person view kills games for me
-The entire stalker series (bought at once) see metro 2033
-The scourge project episodes 1 and 2, 3rd person annoys me after awhile
-soldiers heroes of ww2, bought it a few years after it had came out, and the graphics annoyed me
-Titan quest and expanion: bad D2 clone
-Tom clancy splinter cell chaos theory: 3rd person annoyed me again
-warhammer 40000 dawn of war 2, all the games, no good reason really, will probably finish them soonish
-The "x series" of space exploration or what have you...graphics were either to dated, or controls and documentation bad..
*note* all of these games were purchased during steam sales, I'm a sucker for a sale