A Taiwan marathon hired an actress to dress like a terrifying ghost last week in the hopes that the frightened contestants would run faster. The "ghost" waited in the woods near the race route, occasionally popping out out to run after the racers. It was all done to help support the runners, the woman dressed as a Grudge-type dead girl told The Daily Mail"I didn't dare frighten people by hiding in the woods. I just waited for them to encourage them." Runners apparently find crapping their pants very encouraging. 

Sources: The Daily Mail