There's a sports bar in Bristol, England that has about 20 or 30 pool tables and the employees recently spent about nine hours setting up a crazy chain-reaction trick shot. They basically used all the tables to make a giant Rube Goldberg machine.
First a guy putts a ball down a flight of stairs. Then one ball hits another ball . . . that ball hits a pool cue, which hits another ball . . . and it keeps going.