Although dell desktops (except XPS ones) are pretty bad... their laptops are pretty good. Check out their outlet XPS/Inspiron laptops which are anything from open box and refurbs to scratch dent (which are patheticly unnoticable or pointless scratch and dents lol)... you can get something around a 1.7 - 2.0GHz Core2Duo, 2GB's DDR2 667, 100GB HDD (some w/ 250) and a nVidia 8600M GT 256mb or the faster nVidia Geforce 7900GS for anywhere between $950 to $1100. They update several times per day... so one may be there one hour and gone the next.
I didnt say I was a fan either but for what you can get for the $$ its not bad... Toshiba would be great but their prices are a tad higher...
BUT WAIT... I just found [link=http://www.toshibadirect.com/td/b2c/pdet.to?seg=HHO&poid=365595&msg=clearance]THIS TOSHIBA P100 LAPTOP[/link] on clearence for $999.99!!
17" 1440x900 Display
1.83GHz Core 2 Duo
1GB DDR2 667
GEFORCE 7900GTX 512MB GDDR3 <<<<WOW for 999?!
120GB 5400rpm Hard Drive
Maybe not the best for a desktop but a 1.83ghz core 2 duo is not bad for a laptop... the fastest is 2.4 and you'll dish out another $500 just for that cpu, Plus if you want any shred of battery power left the extra MHz arent really worth it for the mild performance boost. That 7900GTX would run just about everything you would want to on a laptop... and hell for 1000 bucks its unbeatable considering that laptops w/ lesser performance sell for $500 and easily more.