The opening sequence samples the scene introducing John Hurt as the War Doctor but with the character's name changed to "Brooke Matthews", one of the crew members of Showreel.
The post-credits scene is a re-edit of a previous sketch from episode 3, which spoofs the famous "You're only supposed to blow the bloody doors off!" scene.
The opening sequence spoofs the 50th anniversary episode and one its trailers. The presenters of Showreel are portrayed as all being incarnations of the same person. The episode title is a parody of "The Day of the Doctor" and "The Night of the Doctor".