I agree with Zerovoid on this one. The BIG problem with Chez Geek and Munchkin is that, amusing as they are, they're just not well-designed games.
Most of the time, the winner isn't determined by skill, but by luck - it's usually the one person happening to have the best cards after the horrible blood-letting that always happens when it looks like someone is about to win, and everyone starts backstabbing other players. (while both games have loads of cards you can use to hurt other players, they hardly seem to have any you can use to protect yourself from attacks, making it a little too easy to screw people over, which of course leads to retribution, and so on, and so on...)
Good for laughs the first time you play it, but just irritating when played repeatedly.