Before Marvel and JL Ben Stiller led a supergroup. Yep it's dumb humour, but that's part of the beauty of it. It's light action, lame jokes, bright costumes and easy going plots. If you're going to laugh at a guy who can knock a villain out with a long distance fart? You'll laugh plenty. The cast is full of big names having fun, and they do a pretty good job maintaining their characters while delivering their lines.
I enjoyed it more than once. Don't expect massive and you'll enjoy it too.