Do you mean Munchkin: http://www.worldofmunchkin.com/game/
If so yes, once or twice a few years ago. Keep meaning to pick up a basic set to try out with the kids at work as it is a rather fun game. You can work with each other or against each other which makes it quite fun.
Plus as it is simple, you can get people who are not all that geeky to play it and still enjoy it.