Guys, I have a 50" Panasonic G25. The display is as impressive as everyone says, particularly in THX mode. There are a couple of things that are annoying, but definitely not show stoppers:
1. The TV has Netflix built-in, which is great. What isn't so great is that playing Netflix from the TV bypasses the TV's processing logic. What this means is that you can't adjust the screen mode for Netflix content (ie, can't go to Full, Just, etc). So if you're streaming a 4:3 program, you're going to get black bars. If it bugs you too much, the way to avoid this is to use a BD player or something else as your Netflix streamer. I am going to set our BD player up as our default Netflix device. If it doesn't bug you, then no problems at all!
2. The cable box guide comes over as 4:3 as well, and I haven't been able to adjust that. My wife claims she was able to stretch it to the whole screen, but I am not sure how as I checked all the settings. I was able to do this fine on my older Panasonic plasma. My guess is that it is a glitch between HDMI on my Scientific Atlanta box and the new plasma, as I always had the box connected via component on my old plasma. Those SA boxes are notorious for having HDMI issues so if I had to make a wager, I'd say the cable box is at fault.
All in all, I love the G25 and would seriously recommend it.