It really is all about perspective. I have no misconceptions that my tiny living room can completely replicate the movie theatre experience. Overall, however, I was very pleased with the sound and the picture at home. The one area which was lacking was the 3D effect. I could see it, but it wasn't immersive.
Then one night my wife was stretched out on the couch, and I didn't have a place to sit. So I got a chair and put it in front of the couch, about 5 feet closer to the screen, and that caused my 65" Panny to completely fill my field of vision. The 3D effect was MUCH more realistic - enough that it surprised me.
I certainly couldn't afford a 100 inch plasma even if they made one, but this one non-technical adjustment did seem to make a big difference! Now I just need a sticky floor and expensive popcorn and I'm pretty closer to the theatre experience.