I recently watched 'UP' and 'Cloudy with a chance of meatballs' in 3D. Its such an different experience. Watching UP (Brilliant film btw) in 3D was like watching the characters as if they were actors on stage right in front. Its much more than just a fancy new thing. Cloudy was great too, experiencing a food rain is one of the best thing that could ever happen (expect for the storm like in the end ;) )
The dark 3D glasses defintely make the audience look like a bunch of dorks, but who cares, all eyes are glued to the screen :) Here is a drawing I did just for fun.