In their winter 2008 issue, MovieMaker named Braun - along with Errol Morris, Oliver Stone, Michael Moore, and Robert Redford - one of 25 filmmakers whose work has changed the world.

His feature documentary, Betting on Zero,[8][9][10][11][12][13][14] chronicles the campaign of controversial hedge fund titan Bill Ackman and Latina activist Julie Contreras to expose Herbalife as a massive international pyramid scheme and was the subject of extensive international press coverage - in The New York Times, The Washington Post, The Wall Street Journal, The Guardian, El País, and was featured on Last Week Tonight with John Oliver.

Kirsten Dunst cited the film as an inspiration for her work in On Becoming a God in Central Florida, the acclaimed Showtime series she starred in, created by two of Braun's former students, Robert Funke and Matt Lutsky.

Betting on Zero premiered in the World Doc Competition at the Tribeca Film Festival in 2016, where it won a special jury mention for investigative work and was nominated for a Writers Guild of America award for best documentary screenplay of 2017.

The film brings to life conductor Gustavo Dudamel's music making against social unrest and violence that unfolded in his Venezuelan homeland during the spring and summer of 2017.

Prior to Darfur Now Braun wrote and directed award winning short form fictional films and documentaries for HBO, PBS, A&E and the Discovery Channel on topics ranging from test pilots of aviation's golden age to the battle for the rights of the developmentally disabled.