High Quality Content by WIKIPEDIA articles! The Doctor Who campfire trailer is a forty-second television trailer which promoted the fourth series of the British science fiction television series Doctor Who. Filmed on one day in a studio, it stars David Tennant and Catherine Tate as the fourth series lead actors: the Tenth Doctor and his companion Donna Noble. The trailer was produced alongside three thematically similar but separate teaser trailers. The teaser trailers premiered in cinemas and on BBC One on 22 March 2008, and the full trailer premiered on BBC Online on 29 March 2008.