Psy

People perform a Gangnam style dance during a flash mob before the arrival of South Korean rapper Psy in Moscow...People perform a Gangnam style dance during a flash mob before the arrival of South Korean rapper Psy at the Olympiyskiy (Olympic) sports and entertainment complex in Moscow, June 6, 2013. Psy is in Moscow to take part in the MUZ-TV music awards ceremony on June 7, according to local media. REUTERS/Tatyana Makeyeva (RUSSIA  - Tags: ENTERTAINMENT SOCIETY)

Tatyana Makeyeva/Reuters

Russians perform a Gangnam-style dance during a flash mob before the arrival of South Korean rapper Psy at the Olympiyskiy (Olympic) sports and entertainment complex in Moscow on Thursday. 

South Korean singer Psy performs on NBC's "Today" show at Rockefeller Center in New York

Lucas Jackson/Reuters

South Korean singer Psy performs on NBC’s Today show at Rockefeller Center in New York.