Dimly lit room: Plasma, LCD, or DLP

I would go Plasma, LCD doesnt do blacks as good as Plasma and that contrast is where I feel the rubber meets the road, but lamps and such may reflect on a glossy Plasma screen so thats something to consider if you use lights in room at night.

If you dont have issues with lights (windows and such) and want to use for movies and non casual 12 hour per day use with many on and off cycles get a Projector, huge screen and surprisingly cheap cost makes the Projector a winner in the right circumstance. I set my 90in HD Projector system up for less then $1000.....thats way cheaper then any LCD or Plasma or even DLP rear unit and gets out of the way for music use.
If you do think a LCD monitor is best way to go pay attention to contast and hz rate, as Theo noted get 120Hz unit and the larger contrast the better as that is the difference between the blackest blacks and brightest whites.

Plasam burn in issue is not a factor as it used to be, and Green.....well thats more a political choice but for video use (and I assume thats what its really about) Plasam is still at this point the better option for total picture wuality. If you arw a green follower, or worried about Plasama reflective gloss screen then LCS is best.
I would take Plasma and hug a tree but thats just me.

I think Vic sums it up well.

Yes at the super premium extremes they are closing the gap, I just dont think they have in general. An LCD in a dim room is where the inferior blacks are going to be most noticed as everything looks grey but some wont notice or even be bothered by this. My career in hi quality sheetfed commercial printing has admittedly made me pretty picky about color....more so than most.

If burn in is really still an issue at all it will only happen if use of monitor is of a extremely lazy or stupid manner (leaving on for many many hours with a steady image for example) even most stations ID tag turns off during commercials and such so I really dont think alogo burn in is an issue. Maybe stations have changed the way they display logo's because of previous issues....either way burn in would be the last thing I would worry about, picture quality and reflection issues plus motion artifacts trump burn in by a laughable margin.

If that was directed at me your off base, I own a LCD monitor, a LCD Projector, CRT HD and while my dad owns the Plasma I researched it bought it, hooked it up and maybe your not close with your parents but that doesnt I am not with mine and dont have many MANY hours of experience viewing his unit...calling me out on this was a low blow and you can mock me all you want but I wouldnt offer opinion if I didnt have experience, you worry about you and I will worry about me.
Ok back to important stuff and Phase sorry your thread has been hi-jacked.
There is no channel I know of at this time that leaves a logo on during commercials so every 10 minutes or so that logo is gone for several minutes, you can play games on Plasma and watch whatever you wish without worry if you do it like an adult who doesnt walk away from a game for hours. If you have a cheap or old model Plasma this may have been an issue for you but it isnt the case anymore and you need to quit passing bad information, false claims help nobody. LCD has more issues with motion blur than any other technology and that is simple fact.
I would suggest the O.P. google all these topics and research should quickly confirm that black levels are not up to par on LCD, there is no need to worry about image burn in or retention with todays models with normal average daily use and LCD suffers more from image blur during motion than any other technology, also that Plasma reflection from the gloss panel can be an issue........these are all facts not opinion.......fact.
Gmood would lead somebody to think Plasma is a really bad option, if it was that bad then why do so many love it and why is it even still for sale?.......wouldnt the bad press and opinion from the masses have killed it off long ago???? It has happened time and time again with other products so what is it about Plasma that is immune to common sense and bad publicity? The short answer is it isnt immune to bad press, it is a great product the market loves and thats why many advise its best option, LCD is getting better but getting better and actually being better are two very differnt things. cheers