U.S. Billboard seemed to show much interest in the special guests that performed with Psy at the New Year's Eve concert in Times Square.

Yesterday, Billboard shined the spotlight on Yoo Jae Suk and No Hong Chul, the two comedians who appear in Psy's "Gangnam Style" music video.

Billboard stated that Psy had prepared his performance with the two comedians from the actual video for this special stage.

Billboard referred to the two comedians as the 'elevator guy' and 'yellow suit guy'.

The two also showed off their signature moves as well.

MC Hammer also appeared at the end to perform the end of the song with Psy.

This performance will soon be broadcasted on MBC "Infinity Challenge" as well.