If you haven't checked out the Woot-Off yet, take a moment and head over there. And if you don't know what a Woot-Off is, head over to Wikipedia to figure it out. They have had some very nice gems so far, and at the time of posting there is a pretty decent Lenovo laptop going for $780.
Check out this site here. It has a list of Woot-Off checkers, which are essentially pages that auto update and show the Woot-off in progress.