After listening to episode 39 of the Ante Up! podcast, I was intrigued enough to download the Full Tilt client and tried out the Razz play money table last night. What a simple, odd, yet intriguing little game. In short, it's 7-card stud, lowest hand wins, straights and flushes don't exist. A2345 is the best possible hand.
Hey, it's good enough of a game that TJ Clouter got a WSOP bracelet for it in 2004.