What We Do Is Secret is a 2007 American biographical film about Darby Crash, singer of the late-1970s Los Angeles punk rock band the Germs. It was directed by Rodger Grossman, who wrote the screenplay based on a story he had written with Michelle Baer Ghaffari, a friend of Crash's and co-producer of the film. Shane West stars as Crash, while Rick Gonzalez, Bijou Phillips, and Noah Segan respectively portray Germs members Pat Smear, Lorna Doom, and Don Bolles. The film follows the formation and career of the Germs, focusing on Crash's mysterious "five-year plan", his homosexual relationship with Rob Henley (played by Ashton Holmes), and his experimentation with heroin, culminating in his December 1980 suicide. It is titled after the first track on the Germs' 1979 album (GI).

The film was in development for almost nine years due to changes in production staff and adjustments in casting. Grossman conducted numerous interviews as research, and cast West, who he felt "did a masterful job capturing Crash on film." What We Do Is Secret was independently produced and financed, and premiered at the Los Angeles Film Festival on June 23, 2007. It was distributed theatrically and on video by Peace Arch Entertainment beginning in August 2008. It was not financially successful and received mixed reviews, though West received praise for his performance and ability to emulate Crash's behavior and mannerisms. Production of the film led Smear, Doom, and Bolles to reunite as the Germs with West on vocals; this lineup performed sporadically for several years and appears on the film's soundtrack.