I'm not sure if it counts, but New Game + always feels like cheating, so much fun starting over with all upgrades etc!
I mean, you farmed it for hours, probablyicking up Crissaegrim in Castlevania: Symphony of the Night ruined the game for me.
I was one of the unlucky few to pick it up in natural course of play not knowing it was anything out of the ordinary. I think I ended up looking it up at some point but by then I'd already hot knifed through a fair number of buttery bosses. That and 'wait, the EU psn version is only 50hz?' meant my SOTN playthrough didn't really show it in the best light.
Crashing into other cars to help you slow down and corner in just about every racing game ever. Admit it, you've done it too.