I saw the Lego Movie at a nephew's birthday.
It is a light, silly, fun subversive movie that undermines the idea of following the instructions. Also the special effects, like the rolling Lego ocean, are great.
If I have any quibble, it's that it fails to subvert Lego's regrettable abandonment of its gender-neutral strategy some years back. This is very much a boy's club movie. All of the main characters and almost all of the supporting characters are male. The two major supporting girl characters are pretty much stereopes aimed at boys: the cool ninja chick girlfriend and the cutesy pink pollyanna who goes berserk at the right moment. The minor supporting girl characters are a crazy cat lady, a generic construction worker, Wonder Woman, and the offscreen little sister who ruins everything.
The movie is fun, but I am a wee bit soul-crushed by that.