Narrated by Johnny Depp, here is Alex Gibney's portrait of American journalist and author Hunter S. Thompson in the documentary Gonzo: The Life and Work of Dr. Hunter S. Thompson (2008):

From Oscar-winning director Alex Gibney and producer Graydon Carter comes a probing look into the uncanny life of national treasure and gonzo journalism inventor Dr. Hunter S. Thompson. A fast-moving, wildly entertaining documentary with an iconic soundtrack, the film addresses the major touchstones in Thompson's life--his intense and ill-fated relationship with the Hells Angels, his near-successful bid for the office of sheriff in Aspen in 1970, the notorious story behind the landmark Fear and Loathing in Las Vegas, his deep involvement in Senator George McGovern's 1972 presidential campaign, and much more.

Trailer:

Full documentary: