Back Door is a form of malicious feature in which the program is configured to respond to commands sent to it from the developer. A Universal Back Door is an ability of the developer to remotely change the program to do anything the developer desires it to do. Sometimes Universal Back Doors are called "Auto-Update".
This comment thread is for people to document various implementations of this malicious feature.
1941 ( a 1979 Steven Spielberg action comedy film ) seems like a parody of Michael Bay. The film's credits literally have explosions happen all throughout, under the scrolling text. There is so much colorful destruction, so much over the top action scenes, so much loud over-bombardment, that I believe this is the Ultimate Steven Spielberg film.