Warner Bros. Pictures revealed that The Dark Knight passed the $500 million mark at the domestic box office on Sunday, making Christopher Nolan's film only the second movie in history to surpass that threshold.
James Cameron's Titanic remains first with $600.8 million in 1997.
All-Time USA Box office (as of September 1st 2008):
Worldwide, The Dark Knight earned an estimated $919.1 million.
All-Time Worldwide Box office (as of September 1st 2008):