Have a bunch of prisoners battle on live television on a channel that is on 24/7/365. Then have a door to the outside arena open for seven seconds every month and whoever escapes is free and doesn't have to return. Not my idea, but always thought it was awesome.
People in Cleveland go into abandoned warehouses and have knife fights. Whoever wins, wins the bet pool. whoever loses either dies or forfeits and gets the shit beat out of them. crazy shit man.