I have the Alienware 14 gaming laptop. It is one of the few laptops available with an IPS screen, and it is absolutely stunning. I've been able to play every game I've thrown at it in 1080p with high or ultra details in every occasion. So far I've tested:
Assassin's Creed 3
Deus Ex Human Revolution
I'd be interested in the 3DMark score on that. There is a free demo version on Steam...