ear:thing ive noticed with 3D demos..picture very fluid.no grain as oposed to some blu.rays.so this must also contribute to a better 3D experience.fact is...not many faces close ups seen yet!
FFS, grain is NOT a bad thing, it's a fundamental feature of film, you know FILM, the stuff that FILMS are FILMED on! The fact that you can see it on some blu-rays simply means that the transfer hasn't been DNR'd to within an inch of its life, which is a GOOD thing.
If you're not seeing it on 3D demos its because they're probably all CGI, in which case it hasn't been anywhere near film stock.