Best 3D movie I've seen.
I was super tired, so I fell asleep at a couple points in the middle. Ending was pretty emotional, and the movie had a great sense of humor. However, some jokes jumped the shark, I felt. Like, turds and Pac-Man.
Probably the best MCU movie to be honest. Fantastic realizations of cosmic Marvel concepts, and it had fleshed out writing and beautiful cinematography. Insane visuals, great action and dialogue.
Basically, I agree with Jay from RLM. A little too long and a little too predictable when it came to jokes and undercutting tension. I found it funny that the same thing he complained about was something Joss Whedon did when they couldn't think of another writer-director in the MCU.
Its biggest problem was that it didn't do anything for the MCU really. Some would say that's not really a problem, but it did stagnate the universe-building a bit (hinting at Adam Warlock isn't anything really). Which is fine.