Roger Cole
Subscriber
I like HDTV over digital projection. The latter reflects light so there's less "punch", colors, contrast, etc. HDTV has back lit and I'm looking forward to UHDTV. You can also create slide shows with music, narration, titles and credits, etc that makes the shows more interesting. It's also more convenient for guests who use to cringe when I pulled out my projector. Now I just start a slide show on the TV and they don't have time to make excuses to leave early.
For still images, sure. I don't plan to make a habit of using my digital projector for shows of still images, I just pressed it into service. OTOH for watching movies, I'll take my 11 foot wide screen at 1080p, 3D if shot in 3D or I want to watch simulated, over any 4k size screen I could actually afford any day.

Well one other usage (though admittedly we are getting far afield from topic) for still images - 3D stills. Polyglot here posted about shooting stereo pairs using a regular film camera, in his case and RB or RZ67, using a macro rail for precisely separating right and left images. Of course you could view them as transparencies with an appropriate viewer (which you'd probably have to make for 6x7 frames) but today's 3D capable TVs and projectors provide another possibility. I was interested and he kindly sent me some 3D files. Using my 3D projector on that wall sized screen it was like I was standing there where he shot those photos in Sydney. Of course this method is limited to static subjects. I do plan to get a macro rail and play with that. It was very cool IMHO, but inherently hybrid (or pure *ital of course, as they could be shot that way) so even more OT.