Circuit City has a really nice Samsung "thin" model (it uses a tube, but it's one-third thinner than normal tubes) on sale this week.
This is a site that has a lot of info on flat screens.
http://www.avsforum.com/avs-vb/forumdisplay.php?f=40
I've been shopping for over a year for a flat screen. Was at a Sears a couple of weekends ago and everyone there was going crazy over the 50" Panasonic plasma, great picture.