I'm with Maxx here. Unless I've played the game in some form or KNOW I'll like it (read: it's part of a series I've always loved), I probably won't buy it, so this rarely, if ever, happens to me. The closest thing was probably Castlevania: Aria of Sorrow, just because I'd never played a Castlevania after IV, and so I was a little skeptical. Of course, it soon passed.