It's kind of like Doc Brown's old-west refrigerator

Rube Goldberg machines — a deliberately complex machine designed to perform a simple task — seem to be all over the internet. Perhaps inspired by the epic example set by Pee-wee Herman's Breakfast Machine in Pee-wee's Big Adventure (see below), many of these contraptions either use food as the meager excuse for their existence or, in one case, as their incredible source of motion. Below, we've rounded up the ten most incredible Rube Goldberg machines we could find. To the best of our knowledge, these are all real — ie, not fake, made for movies or animated. Oh, like you were going to get any work done today, anyway.