Excellent Muppet jokes (with Henson in the lead, how could it be otherwise?), but marked by one of the most cutesy-painful CGI creations ever to be featured on-screen.
I do remember going to this at Disney World but I remember very little about it other than I thought it was some OK fun, but I'm sure just watching the film on its own without the extra animatronics and 3D effect is pretty lame.
Admittedly watching this on youtube probably isn't fair, considering the main attraction seems to be the fact that it's 3D. Still, I found it rather dull and full of blatant gags.