Slickdeals
Dont' know if anyone else uses this site (been using it for years), but it's great for finding deals on almost anything, so thought I should pass it along. Plus, the user comments help a lot. I usually check the main page for the best deals and then read through the 'hot deals' forum to see all the rest. I've never joined and you can do searches without joining, which is good.
Warning: You may buy stuff that you don't need. :D
Slickdeals.net: The best coupons, deals and bargains to save you money!
Swan-Diving off the tongues of crippled giants