Minimizing my MacBook Pro's heat

What can I do, other then keep the heatsinks clean and monitor Fan speeds, to keep my system's thermals down?

Dabbling a bit into games(Torchlight, CnC3, Eve) and 3D modeling, the CPU tips almost 100 degrees C and the GPU(G86) hits 80 with ease.

I've cleaned out that mess Apple calls Thermal grease and used compressed air to clear out the heatsinks, but it seems to help only for a day or two, and a degree or so...

I've considered purchasing a notebook stand/cooling assembly, but decided against it for mobility reasons.

My 'BookPro pretty much goes wherever I go, and that often means long train rides... I don't see myself hauling a piece of equipment along for the ride.

Additionally, from a design standpoint, the airflow of a cooling stand would fall on a flat surface, there's nothing there to promote heat-exchange... as the system's intakes, I believe, are alongside the keyboard.