 Creadon is one of only a handful of filmmakers to release multiple films that were ranked within the Top 100 highest-grossing documentaries of all time.Other filmmakers who have accomplished this include Werner Herzog ("Encounters at the End of the World", "Cave of Forgotten Dreams") and Academy Award winners Michael Moore ("Sicko", ""), Charles H. Ferguson ("No End in Sight", "Inside Job"), and Davis Guggenheim ("An Inconvenient Truth", "It Might Get Loud", and "Waiting for 'Superman'" ).Creadon began his career as a child actor in Chicago.