I have one, probably played it about 4 times since I purchased it. Most of the games currently available suck. DOA4 bored me, Kameo isn't my type of game, Fight Night Round 3 kicks ass...I like that one.
Gun was okay, but I beat it... doesn't interest me anymore. Never been a racing game fan. I've played them, but there's only so much racing I can handle before I get bored. COD 2 is nice too, but I'm not into those type of games either. There's been like 20 similar games since the whole September 11th thing happened.
Hopefully there'll be more interesting games soon or I'm just gonna box up this sucker & stick it in the closet (along with about 4 other xboxes I own).