Box Office Milestone: 'The Avengers' Becomes No. 3 Pic Of All Time With $1.331 Billion
A month in, Joss Whedon's The Avengers continues to make box office history.
PHOTOS: 'The Avengers' Poster Art Teases Marvel's Superhero Epic
On Friday, the Disney and Marvel Studios' tentpole surpassed Harry Potter and the Deathly Hallows Part 2 …