I bought a Samsung 50" 1080p plasma (don't know the exact model number offhand) in November and it's pretty damn sweet. I really only watch Blu-Ray movies, football, the History Channel, and Seinfeld reruns for the most part.
The only thing I would have done differently is go for the 120HZ instead of 60HZ but since it was only $1,500 brand new from Best Buy and the epitome of an impulse buy (I only went in for an external hard drive) I can't complain.
In August (just in time for football season) I'll be upgrading to another Samsung plasma but 120HZ this time for the living room and I'll likely move the 50" 60HZ I have now into the bedroom or the office. Dunno yet.
I know that plasma vs. LCD debates can go on forever and ever but to me, LCDs - no matter how top-end the model - just don't have that "Holy shit that's awesome" factor that plasmas do.