Marvel's smash hit "The Avengers" is one of the highest grossing films of all time, with a star-studded cast that includes Gwyneth Paltrow, Scarlett Johansson, Robert Downey Jr. and Chris Hemsworth, 

But what happens when a bunch of superheroes get together? 

Sure, they save the world and all that, but they also goof around-- a lot. This blooper reel shows an awkward kissing scene between Gwyneth and Robert, Captain America busting his best dance moves, costume fails and more. See it for yourself below.

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