They Way Things Go is a Rube Goldberg inspired art film by Peter Fischli and David Weiss (1987). The 30 minute film documents an assembly line of action and reaction.
"The machine is in a warehouse, about 100 feet long, and incorporates materials such as tires, trash bags, ladders, soap, oil drums, and gasoline. Fire and pyrotechnics are used as chemical triggers. The film is nearly 29 minutes, 45 seconds long, but some of that is waiting for something to burn, or slowly slide down a ramp."
Lots of explosive fun. Excerpt below.