Engadget has been drooling over one recently: http://www.engadget.com/2009/03/19/asus-w90-gaming-laptop-gets-put-through-its-paces-raises-the-b/
I run on a last generation Macbook Pro, with 512M VRAM in the 8600M GT it comes with. 4 Gigs of RAM, 2.5 Ghz dual core intel, 250 Gig 5400 rpm HD...