The way that PSY has revealed that his dance moves takes on a Buddhist influence is like he's taking it as a joke.
"On Oct 21, Psy tweeted a photo with the caption, "#AncientOriginOfHorseDance -1000 years ago in KOREA lololol."
If he would use his fame to spread Buddhism worldwide, then that is great. But I would not put a wager on that... because if he did, then there would have already been signs or directions towards that. His dance moves does indeed look like the iconography carved out in the picture.. well inspirations can arise from anything, so maybe he did indeed get his inspiration from the iconography of the Buddhist depiction.
Thor, thank you for the videos. It was most interesting, as I didn't know that there were so many Rinpoches spreading Dharma through pop culture, music, art, dance etc. Definitely shows the flexibility of the Buddhist teachings - how it can adapt to modern day interests.