A gaming cafe in Kaneohe, Hawaii was robbed last week, three youths storming in and demanding money from the customers inside. They got the money, but I don't think they were ready for one guy to fight back.
As you can see in this clip from KHON2 news, things were going pretty well for the bandits early on. They come in, threaten the front desk employee, rough him up then start taking money from the kids inside using the computers. Then they try and take one guy's DS. Nunh unh.
He goes bananas, flying straight at his would-be thief with a flurry of punches. He even manages to land one. He receives several more (with interest) in return, but his actions help inspire the rest of the cafe's inhabitants, who eventually fight back, stealing the mask of one robber and causing the rest to flee.
Three of the thieves were apprehended by police around a block away.
Gamers fight back after robbers target PC Gamerz in Kaneohe [KHON2, thanks Johnny!]