OMG Powda, that laptop is the SHIZZ. Its obviously whats considered a 'desktop replacement' and not a highly portable laptop. It has a normal P4 chip instead of a M chip. Meaning it will suck juice like a horny pornstar. But as long as you keep it plugged to wall most of the time it will kick butt.
Alienware laptops defintely look very nice. Use very nice parts. I think you would be much better off going to their website though and customizing it yourself. If you go there, drop p4 down to 2.66 ghz, 1gig DDR, 128 Radeon 9000, WinXP home, etc. You can come out to around $2,561. And this would well outperform the one BestBuy has.
That AMD latptop from Best Buy, CRAP. Toshiba's are great laptops also. Check this one:
http://cgi.ebay.com/ws/eBayISAPI.dll...category=38123
I like the 16.1" screen much more. Not sure if you want to buy off Ebay or not though. I generally trust ppl with enough feedback and its new stuff with warranty from manufacturer.
One thing on the video, the 9000 Radeon and GeForce42go's are last year's video tech. Both annouced newer stuff back in March to coincide with Intel's launch of the Centrino laptop chipset. Ati put out the 9200 and 9600 mobilities and NV chips based on FX tech. Neither have showed up in laptops yet, but it should not be long.