This was just a cool article I ran across (of course I put it on the news links on my site yesterday)...
They show you how to build a laptop. These are not for budget laptops, but the compete quite well against high end gaming laptops. He built a P-M 770 with 80GB drive, 2x512MB DDR2, GeForce 6600 with 128MB, 15.4" display, and a DVD burner for $1700.
The like to the chassis was dead when I tried earlier, but a serch for that model found one in no time. ASUS makes a similar one for a Turion64.