Megamind is a surprisingly thoughtful film. Much more slowly paced than I would have expected. It reminds me of The Nightmare Before Christmas, in the sense that the driving force of the protagonist is ennui, something rare for a movie theoretically aimed at children.
I give it heaps of extra credit for the way they've controlled the trailers. They did a great job not spoiling anything. Everything you've seen in the trailers only covers the first twenty minutes or so.
I saw the AV Club gave a B+ to Tangled, so maybe it's not terrible? Rapunzel has a spunky animal friend, so it seems like it has to be bad, I dunno.
.8 Ron Perlmans out of a possible 5.