I'm pretty happy with my Mitsubishi rear-projection HDTV.
Even if you don't have an HDTV receiver, widescreen DVDs look breathtaking on these televisions. I enjoy watching movies on this TV more than I do going to a theater.
And if you're into tweaking stuff, the Mits televisions have got an empeg-like group of tech-heads messing with them and exchanging information. They can be found in the Mitsubishi forum of www.hometheaterspot.com. Very useful stuff.
I don't know how the Mits televisions compare to other rear-projection brands, though. I hear good things about the other brands as well. My main point is that widescreen RPTVs are nice if you've got the room for one.