Ok I got my Alienware a few weeks ago and it's amazing. Here is my spec first:
Aurora 5500:
Microsoft XP
AMD Athlon™ 64 3200+
1GB Alienware® Dual Channel Low-Latency DDR PC-3200 at 400MHz - 2 x 512MB
ATI® Radeon® X300 PCX 128MB DDR w/Digital and TV Out
200 GB Western Digital Caviar SE Serial ATA 7,200 rpm w/ 8MB Cache x 2
160 GB Seagate Barracuda Serial ATA 7,200 rpm w/ 8MB Cache
NEC® ND-3520 16x Dual Layer DVD±R/W Recorder
Creative Sound Blaster® Audigy 2 ZS - 7.1
This computer is great for video editing, sound recording, cgi, gaming and just about anything you throw at it. I also have a crazy amount of hard drive space so I don't think I'm ever going to fill this thing up

I'd recommend one to anyone wanting a powerful computer for use of anything that involves a higher than standard computer such as editing etc. I've never had any problems with it at all in the past few weeks and the quality is just amazing!