I'm not even sure when Black Friday is (is it the last Friday in November?) but I do know that in the USA you all go shopping crazy and there's loads of offers to be had.
Yellowcastle and I will try and keep you up to date as news of them comes in.
Target: (Beginning 4AM 11/26 and while supplies last): Galactic Enforcer (5974) and Trolls' Mountain Fortress (7097) each $64.99; Additionally, receive $10 Target Giftcard with $100 or more purchase (valid 4AM thru 10AM 11/26)
K-Mart: (No Info Yet):
LEGO Stores: (11/26 while supplies last; store hours vary): Receive a Discount Scratcher at checkout worth 10%, 20%, or 50% off of your purchase