I just got back from the Lego Batman Movie. It's... well, it's fantastic. Maybe the most fun I've had with a superhero movie.
Silly and funny and dynamic and colourful, and very tongue-in-cheek (it's like an all-ages version of the Deadpool approach in places), but combined with perhaps the most emotionally mature approach to Batman yet seen in a movie. Yes, I'm serious. It asks some good questions about the character and gives some great answers.
I want to rave about loads of specific bits of it (do we need a spoiler thread for this one?), but for now I'll sum it up like this: everything is awesome.