I have written here about deals on gear before. Black Friday is supposed to be a day of one time deals. The idea is to bring you into the stores to buy other non discounted stuff along with the cheap deal. The problem with this idea is that the odds are against you on actually walking away with a deal. Retailers often only stock a small quantity of the deeply discounted items. Do you really want to get up at 3am and stand in the cold just so you could find out that they only had 2 $300 HDTVs in stock and you are third in line? In my opinion it is way too much work to get that deal than its worth.
The truth is you are not going to find a Black Friday deal on a Canon 300mm f2.8 IS. Believe me I have looked. What you will find are some of the lesser items you need such as bags, memory cards and various off brand accessories. I have compiled a list of some Black Friday deals along with some things that you can buy right now at discounted prices. These are things that I believe a working photographer might use.