A lot of sites compile the best Black Friday deals, including bfads.net, tgiblackfriday.com and blackfriday.gottadeal.com.
Here's a little something related to the best BF deals that I got from Consumer Reports:
"Staff picks: The ten best Black Friday electronics deals
We've been obsessively poring over early Black Friday ads for several weeks now. While we've found many deals to share with you, our electronics team thought these particular bargains might just make it worthwhile to wake up far too early and brave the consumer crowds on the day after Thanksgiving.
Laptops: In a doorbuster deal, Best Buy is selling a Sony laptop with a Blu-ray drive for $500. It includes a Blu-ray video, a subscription to a security software package, and a laptop bag. To take advantage of this early-bird deal, you need to pick up a ticket at Best Buy (they'll be doled out starting at 3 a.m. Friday morning), and quantities are limited to 10 per store.
Desktops: Best Buy will also have the HP Pavilion p6624y with a quad-core AMD processor, 8GB of memory, and a 1TB hard drive. It comes with a 23-inch monitor and a wireless printer. The Black Friday price will be $600; it's currently on the Best Buy site for $700, without the monitor and printer.
E-book readers: The best deal will demand an early morning. Early-birds at Best Buy can save about $50 on the Nook Wi-Fi, which is selling at $99.99 rather than its usual price of $150.
32-inch LCD TVs: There are a number of deals on 32-inch LCDs. So far, the cheapest we've seen is the Emerson 720p set at Walmart (model LC320EM1) priced at $198.