Did you ever cheated in games?

I've never cheated in a multiplayer game, but I do admit to cheating in some of my single player, offline games. Usually it's on a second playthrough to cut down on grinding, or to spice up the gameplay a bit with some of the sillier ones. I figure it's not hurting any one else's good time if I give myself infinite gold in an RPG rather than "earn it" by running in circles killing wolves for ten hours.
I've also gotten pretty good at creating cheat tables for the cheat engine, which is a small skill I don't get to brag about often since my gaming buddies would probably crucify me for such a sin, haha.