I bought Dungeons and Dragons Online from my cousins for $2. Their computer couldn't run it, so when they had a garage sale, I decided to buy it off of them for a Toonie and try it out. Big mistake. That game was a waste of perfectly good money. I'd ask for a refund, but, meh.
Oh yeah, and Mortal Kombat: Armageddon. See, I've never really liked fighting games because most of them are seriously unbalanced and can be won by mashing buttons. I also think it's a pain in the butt to memorize combos to perform half-assed moves. However, I just felt the need to buy it, and I really regretted it. From start to finish, I hated it, though I continuously kept telling myself it wasn't that bad of a game. The character creation and story mode were about the only decent aspects of the game. I won't make that mistake again. If I ever get a PS3/360, I'll just borrow Soul Calibur IV from one of my friends.