(nydn) While Rock was all laughs at his premiere, director Regina Kimbell certainly wasn't smiling when she filed a suit against the funnyman for allegedly ripping off her 2005 documentary, "Nappy Roots." Kimbell claims that she showed her film - which won the Pan African Film Festival's best documentary award in 2007 - to Rock on the set of his TV series "Everyone Hates Chris" that same year. The ideas behind both films do seem similar. The synopsis for Kimbell's film on mynappyrootsthemovement.com says the flick "takes an unparalleled look at how black hair is used as a prism through which to look at cultural, societal and political issues in the African-American community over time."