I'm just using a cheeseball CompUSA brand $15 no fans cooler at home (I'm thinking about getting one WITH fans) , and in the office it's DEUS EX:INVISIBLE WAR. The box is pretty big and I use that to prop up the rear of the laptop. Sometimes THIEF3 or RCT3 gets tossed under the front as well to help with airflow.
Speaking of airflow, there's a really cool program called GET THERMAL that I suggest. DL'd it yesterday and have been havin' fun adjusting my fan speed. Thing sounds like The Killer WHALE (Warrior: Hovering Assault Launch Envoy) chasing down Zartan's Swamp Skier, the Chameleon.
Sorry, I'm in a G.I. JOE mood today.
Anyway, hope that helps.