Mark Rober's Revengineers

Mark and the Revengineers exact sweet revenge on inconsiderate shoppers who over-indulge on free samples at a booby-trapped farmers market stand. Then, they set loose a fleet of robotic shopping carts on lazy cart returners at a local grocery store.

Mark and The Revengineers target hygiene violators with a high-tech, remote-controlled wash station that shows no mercy. Then they give lazy dog walkers a taste of their stinky medicine when they fail to pick up after their dogs.

Mark tackles bike theft by challenging the Revengineers to a competition to see who can build the ultimate, unstealable revenge bike; the team hits the city streets to watch wannabe thieves try to make off with the booby-trapped bikes.

The Revengineers get shocking revenge on inconsiderate fast food patrons by pseudo-electrifying cars that park in electric vehicle spots. Then they deploy a fake drive-through menu that raises prices on customers who are slow to order.