I guess I ought to apologize: I wasn't thinking of people who couldn't see 3D.

Still, _Hugo_ uses 3D in a way that's not just a gimmick, but a valuable addition to the film. (I posted a semi-essay about it on my LJ.) It's not an addition that'd work for _Avatar_ or _Prometheus_ or even the up-coming depthening of _Titanic_. It's actually unique to _Hugo_.