Michael Moore's controversial film Fahrenheit 9/11 has become the first documentary to make $100m (£54.5m) at the North American box office.
Moore wants his film to make more people engage with politics
The film, which criticises President Bush's policy on Iraq, has made $103m (£56m) since opening a month ago.
The previous record for a feature-length documentary was $21.6m (£11.8m) for Moore's Academy Award-winning film, Bowling for Columbine.
Moore said the American people had gone to the cinema "to look for the truth".
"If you had told me when we were going through all the pre-distribution problems with Disney that this film would gross more than any other Disney film this year, I don't even know how to respond to that," he said.
The film lost its original distributor when Disney would not let Miramax release it due to its political content.
Miramax bought back the film and arranged for it to be distributed independently.
"It's really cool now to talk about politics, and this is
the first time I've seen this happen in decades, really. Being apathetic right now is very uncool,"
"I believe the film is going to bring hundreds of
thousands of people to the polls who otherwise were not going to vote. I think it's going to have a
tremendous impact in that way."
Fahrenheit 9/11 won the Palme D'Or at the Cannes film festival in May.