All the Random Celebrity Cameos in the Marvel Cinematic Universe

The movies of the Marvel Cinematic Universe are so jam-packed with characters, places and amazing sights, it's almost hard to miss all the tiny celebrity cameos. Celebrity Marvel fans are often treated to smaller roles so they can say they were "in a Marvel movie." Here they are, starting with the first Marvel Cinematic Universe film, Iron Man. 

Quick note: We aren't counting all the Stan Lee cameos since all Marvel fans know them well.