Totally backwards. For broadcast formats, see the FAQ:Nobody broadcasts in 1080p (at least not yet). ABC and ESPN (and maybe FOX?) broadcast 1080i, most of the rest are 720p.
Probably not broadcast (although I think one or more of the satellite companies might have at least some 1080p channels), but don't forget that there are 1080p sources out there now. For example, you can get 1080p from Blu-Ray disks or by downloading movies on your Playstation 3.in the foreseeable future will anyone broadcast in 1080p?
Another reason could be that ABC owns ESPN.Oop, you're right. It's righty-tighty -- how does that go? ESPN is obvious because of the sports content being better suited for non-interlaced. ABC probably because they had the Monday Night Football franchise when HD came out. FOX? Who knows.
At 50", yes, you'd be able to tell the difference. Small difference, but yes. 42" and below...I doubt it very much.with any quality brand, at 8' I'd be surprised if anybody can tell the difference between 1080p and 720p(768p) on a anything 50" or smaller