I've just seen The Croods:
It has good plot twist, and it sets up a situation for an near impossible Hollywood happy ending, but of course they pull off the Hollywood happy ending, because it's a kids movie.
So if you have kids and you are getting dragged to the movie theaters for them to watch a movie, then this movie in 3D will keep you from boredom.
But I wouldn't suggest this movie for seeing for yourself.
The 3D effect was great and so was the CGI animation........I saw 3D XTREME (3D IMAX at select Rave theaters) version.