Next step after HD?

" Is it bad I can't really tell the difference between HD and SD....? "

3D seems like a cash cow, I really hope it will not catch as a "trend-setter"

I'd say 3D is starting to appear, but I doubt it will become something as necessary to a home theater as something like a DVD Player.
 
The next step is probably higher definition. As good as it looks now, TV's will probably get bigger soon, and need something higher than 1080p. Maybe someday, we will see 2080p.

If you asked someone in 1999 if tvs could be better they would say no way. It's the same with us, we wont believe it will get better but it will. 
EDIT: By this I mean clearer pictures and higher resolutions.

" Not 3D. God please not 3D...... "

Higher resolutions are always possible. The current 1080p standard is ~2 Megapixels which is actually relatively low. Most hardware sites are already benchmarking in 1600p and have for a while. Backlighting and pixel quality are also areas that could be largely developed. Currently AMOLED and yellow-filtered pixels (to supplement the long-existing RGB standard) are on the horizon. 
 
  

HD can always get more HD. We just need better technology. I think, one day, tv picture will be indistinguishable from reality.

Real-D
 
If you know what I mean

it looks like 3D HD. we are really not in a full HD universe yet. older and poorer people have not yet gotten an HD tv yet. HD has not been fully accepted to people yet. cable charges extra to watch channels in HD. once that comes down to be normal than it will be great. video games don't run in full HD yet. they run more like in 540p and upscale everything to 720p and 1080p. the next thing is going to be like 2000p and 3D, in a side step. 
 
soon in the future we are going to be able to see and hear what people are thinking. it is going to be great. the resolution is going to be so big that their brains are going to show.

UD. 
 
Ultra Definition!!!

3D. 
Why everyone be hating on 3D? Why damn it? 
Having 3D gaming and TV like in Avatar where the 3D (for me at least) didn't affect the image quality and simply added depth to the actual image, rather than the old skool throw shit the the audience constantly move, would be absolutely amazing... I can just imagine watching me some LOST or playing me some Uncharted 2 with relative depth to the image. 
Dude, yes. 3D fo life, motherlickers!

It's already been discussed here, but I'll link it again:-
 
It's called SuperHiVision and it's already in Japan.

" @SeriouslyNow: When exactly will that resolution need to be used? If you have a gigantic TV? I was talking with a friend of mine who deals in HDTV on a daily basis, and he said that anything less than 42" only needs 720p, because you really can't tell a huge difference whatsoever if you go any higher. Of course, I'm not saying his word is the golden truth or de facto standard, but it seems about right. "