I'm on a Compaq Evo N800c right now and loving it. 1600x1200 display and a gig of DDR memory on a P4 2.4 GHz. It has a combo DVD/CDRW drive and wireless too.
If I were to buy one for myself and not for work I would look at Toshiba for sure, and AlienWare of course but they tend to run hot.