DreamWorks Pictures is offering the "Tropic Thunder" documentary spoof "Rain of Madness" for download exclusively on the iTunes Store.

The companion piece serves as a documentary of the making-of the feature film within the film. "We wanted to do a fake documentary about the making of the movie within the movie which is called 'Tropic Thunder' -- not the actual movie 'Tropic Thunder.' The fake documentary focuses on the real movie's fake director, and what happens to the fake cast before they go into the real jungle. It's pretty straightforward," says Ben Stiller.

The film was shot on location in Hawaii, at the same locations used in the feature film. You can check it out at RainOfMadness.com.