The best deals on TVs are the week before the Super Bowl.
The Black Friday deals actually tend not to be real deals. Manufacturers actually make Black Friday versions of their TV's that to the average consumer look like that great TV they've had their eye on for months, but it reality is an inferior version, which is why they can offer the Black Friday price. The only way to know the difference is compare the model number.
One of the major morning shows had a segment on Black Friday deals and they specifically said not to buy a TV yet, wait until January. I did some more research after they said that and found a lot of reports confirming what they said.