Wife and I are about 1/2 way through Hugo and it is the most impressive use of 3D I have seen yet in a film. It's both non-intrusive, yet fully impressive at the same time. Very hard to explain and maybe not a "show off disc" per se, but the 3D just comes over you and pulls you in. I have not felt this way since seeing Avatar in the theater. Sure, the Imax movies are all pretty much amazing, but Hugo and Avatar, at least to me, are what moves this format forward.
Imax movies my wife and I will "ooooh" and "ahhhhhhhh" every few minutes. Hugo, we are speechless.