Grab the xbox now...pick up a ps3 later next year when they have better games. The only thing appealing to me about the ps3 is the blu-ray and the recent price drop to $399.99 (and Spidey 3 movie included). If you're really not huge into home theatre, no reason not to get the xbox instead and wait on the ps3.
2000 Jeep Wrangler
2007 335i AT, Sports Pkg, Heated Seats, Nav.