While The Avengers will culminate "Stage 1" of the Marvel movie enterprise, it doesn't mean that the comic book studio is done filming their superheroes. Iron Man 3 is the next film that will go in front of the lens and an open casting call for extras and stand-ins has revealed that Scarlett Johansson will return as Black Widow. Additionally, Don Cheadle and Gwyneth Paltrow will reprise their roles along with, of course, Robert Downey Jr. as Iron Man. Here's the casting announcement:

