Reviewed by GREG KING Director: Mike Newell Stars: Al Pacino, Johnny Depp, Michael Madsen, Bruno Kirby, Anne Heche, James Russo Running time: 126 minutes. Proving once again that truth is often stranger than fiction, Donnie Brasco tells the story of an idealistic young FBI agent who spent three years undercover with the mob in order to gain evidence on their activities. In 1978, FBI agent Joe Pistone …