"Doctor Who Confidential" Desert Storm (TV Episode 2009)
Numerous clips are shown and discussed."Doctor Who Confidential" Is There Life on Mars? (TV Episode 2009)
Clip of Carmen telling the Doctor, "He will knock four times."Doctor Who Live: The Afterparty (TV Special 2013)
A clip is shown
"The Simpsons" Treehouse of Horror XX (TV Episode 2009)
Don Payne is credited as Don "He Will Knock 4 Times" Payne.
The Fly (1958)
The look of Trivorites.Charade (1963)
Influenced the Doctor and Christina's relationship.The Flight of the Phoenix (1965)
Cited as an influence."Doctor Who" Robot: Part One (TV Episode 1974)
Malcolm mentions to the Doctor that he has read all his UNIT files. The Doctor amusedly asks, "Really? What was your favorite, the giant robot?" The Giant Robot was the novelisation's title for this story.Raiders of the Lost Ark (1981)
The burglar uses the same technique as Indiana Jones to remove the historical artifact.
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