I find that before & after the holidays and between CES and the Super Bowl are the best times to shop large screen TV's of any sort. For example, Panasonic is blowing out their 700u and 770u 1080p plasma models since they just introed their new models at CES and need to make room on retail shelves for the new units. I tend to buy the "best in class" stuff from the previous year on the way out unless it is missing an obviously key feature for future compatibility since it usually costs a LOT less than the latest/greatest while it's still fresh out of the factory.
So yea, between now and Super Bowl Sunday is an excellent time to buy!