Back to the Future: How the Delorean Time Machine Works, Part 1

Doc Brown tells Marty how to get the Delorean Time Machine to work - turn time circuits on and input destination time on keypad; and also how, on November 5, 1955, he invented time travel - Doc was standing on the edge of his toilet, hanging a clock, the porcelain was wet, he slipped and hit his head on the edge of the sink, and when he came to he had a revelation: the flux capacitor!