The only thing I have run across is wanting to hook up a computer to the TV and not being able to make it look that good, as the TV does not have a VGA input, but I have only wanted to do that maybe twice since I have owned the TV. It doesn't run hot like many people claim plasmas do, and I have had no burn in related problems either. Panasonic has almost cut the cost of this TV in half for
this years model (in fact my Uncle bought one and had me set it up over THXG), and you get 1 more HDMI input on the back. It's a great TV, and the main reason is the value you get compared to other models. At the time that I purchased it only sets at least $800 more than mine had more than 1 HDMI port on them, although that is changing as HDMI has become the standard HD connector over DVI. Also the new models have a half life of 100,000 hours so these sets will last you forever.
But as a short answer to your question, I love it. No complaints.