Lenny Kravitz performs on stage during Rock in Rio Madrid 2012 on June 30, 2012 in Arganda del Rey, Spain. (Photo by Carlos Alvarez/Getty Images)

Lenny Kravitz cast as Marvin Gaye

theGRIO REPORT - Lenny Kravitz has been rapidly building up his filmography with high profile supporting turns in 2009's Precious and this year's The Hunger Games. Yet his next major role may propel him to the next level as an actor...