Trivia: Totenkopf (German for "death's head") is a military insignia featuring a skull above crossed bones and that the lower jaw bone is absent. Today the insignia is particularly associated with Nazi Germany's elite soldiers who served in the 3rd SS Panzer Division (Death's Head Division) in World War II, but it has its origins in cavalry of the Imperial Prussian army.
Trivia: When Polly is reporting the advance of the giant robots on the phone to her editor, she says "They've reached Sixth Avenue... they've reached Fifth Avenue... they're a hundred yards away..." This is an exact line taken from the famous 1938 radio adaptation of "The War of the Worlds," with Orson Welles.
Trivia: Kerry Conran first started this film with a low budget. He wanted to make a film with his friends and his family in his house, but it became too long to achieve. Producer Jon Avnet heard about the six-minute film and was deeply impressed, so he approached Conran with the idea of turning it into a full-length production.