computers/tech (the only three sites you'll ever need, unless you only use apple stuff) newegg.com thinkgeek.com pricewatch.com racegear helmetcity.com (more than just helmets) saferacer.com good prices on prepainted subaru stuff (including morrettes) allsubaru.com fun/funny/mature jlist.com stupid.com archiemcphee.com (just in case you need a pig catapult or smoking shriner monkey or something) of course, overstock.com (got a 90$ freestyle watch for 25$) i've got TONs more book mrkd on my server.... let me know if you want em.
Techbargains Not a great site if you need something specific right away, but can get you great deals if your just looking for a general item/items and can keep an eye out until you find what you want....
For good pricing on all sorts of things, check the fatwallet.com Hot Deals forum. I've scored a lot of good stuff at very deep discounts thanks to FW.