Supposedly, CPU magazine has a feature article on building laptops this month... Haven't read it yet, so I don't know if it's worth anything or not.
Also keep in mind that the new Centrino Pro notebooks are hitting the streets. You might also check whether a Quadro based card might be better for your video work (NVidia is also releasing the new 1600M Quadro along with the 8600M cards = DX10 compatible). Since you are working with video, you also might give some real thought into monitor size and make sure it supports the resolutions you need (or can via an external port).
Basically, you need to really think about what you are going to be doing with this machine. And balance everything. Notebooks like mine won't last long on a battery. Long battery life machines won't game or crunch numbers real well. I picked mine because it does everything I need for the office and gaming; and I wasn't concerned about battery life.
I've been really happy with my Killernotebooks, but it's entirely out of your budget. BTW Audi, it is overclocked and there hasn't been a single issue. I'm hardly stupid either....
What are load temps?