AFIAK Dell has an exclusive deal to put this in their laptops for the time being (should be over pretty soon). I remember reading on some forum that is heavy with Sager people, and they said that Dell has an exclusive deal for a bit. Sager had gotten their hands on some, but couldn't sell them until Dell's exclusive deal is over.
I was going to buy the XPS Gen 2, but realized it was a bit too much money, and I don't really need a laptop. It'd be the laptop I'd get if I were to get one though.
Cheesetogo, it would be about twice as fast in games (at 1600x1200). The Go 6800 is about as powerful as a desktop 6600GT or maybe a 6800 non-Ultra.