Alipay CEO
Alipay (under Alibaba Group; similar to PayPal) CEO Xiaofeng Shao made a promise this July that he would go streaking if Alipay daily transactions exceed 1.2 billion yuan by the end of 2009.

It reached 1.213 billion yuan on Dec 7 for the first time; and, yes, Mr Shao kept his promise and ran around naked in front of the crowd on Dec 8, which also happened to be Alipay’s fifth anniversary.
Guess it only happens in China.