Cecil B. DeMille was a Hollywood film producer.
Steinberger P. Green thought that the interruption of his film by the First Doctor, Steven Taylor and Sara Kingdom was DeMille's attempt to sabotage him. (TV: The Daleks' Master Plan)
In 1938, a disgruntled stagehand sarcastically wondered if Seth Rakoff thought he was "Cecil flamin' B. Demille". (COMIC: The Curse of the Scarab)
Barbara Wright told the First Doctor that she knew that ancient Rome "won't be Cecil B. DeMille." (PROSE: Byzantium!)
The pleasure palace of New Xanadu on Phobos resembled a collision of Bauhaus and Cecil B. DeMille. (PROSE: Crimson Dawn)