Let's see... I couldn't think of many until I read the existing posts.
Time Shift was one, I admit, I'm a sucker for slow-time mechanics, especially if I can cheat and make it infinite. I got the game for PC for precisely that reason, but never was able to find a good trainer.
Borderlands. Alone. So alone.
Aside from those, I don't have much patience for games I don't enjoy. My game time is limited these days, and I don't want to waste it *not* having fun. Also Gamefly is a godsend for these things. If I rent a shitty game, I just pack it up and send it back. The last time I bought a game without playing it first was Final Fantasy 13. That will be the last time I ever buy a game on good faith alone. I thought I would buy the new Assassins Creed, but after seeing the reviews, I'm going to give it a rent.