"Gangnam Style" has set several records during its phenomenal five-month run, including the first video in Internet history to surpass 1 billion views. 

The man behind the music, Psy, is enjoying his success by partying and hanging out with some of the biggest names in Hollywood such as Leonardo DiCaprio, Jon Bon Jovi, Gerard Butler, and Justin Bieber. Not bad for a guy who was relatively unknown in the U.S. less than six months ago.

Earlier today, Psy tweeted a photo with actor Kiefer Sutherland. He wrote, "How many hours a day mr.Sutherland [sic]!? lol". The picture shows the two stars grinning widely. Both have their arms wrapped around each other.

Sutherland starred in the hit TV drama 24, which was also extremely popular in Korea. For eight seasons, he portrayed fictional Counter Terrorist Unit (CTU) agent Jack Bauer. Although the series ended in 2010, a feature film of the same name will be released in the future. Reports have stated that filming will begin later this summer.

Many Korean fans have already commented on the photo, saying, "How many people does Psy know in Hollywood?" "Awesome," and "I loved 24."

Meanwhile, Psy is set to attend the NRJ Music Awards 2013 in Cannes, France on Janaury 26. He is nominated for three awards: "International Revelation of the Year," "International Song of the Year," and "Clip of the Year."