Every TV I bought on Black Friday (3 of them) has been significantly more online since then. I spent $1,200 on a 42", 46", and 50" display, and that would run my close to $2,000 to buy right now. I think the time right near Black Friday is THE time to buy every year if you want the best deal within a 12 month window. Some deals will take luck, but others are just out there to get.
That is, hopefully, when I can score a 80" Sharp at a great price next year.