Music: Tunak Tunak Tun

According to the Wikipedia article:

The "strange" dancing and presence of only the singer in this video was a response to criticism from the world of Bhangra pop. Many critics at the time complained that his music was popular due to his videos which featured multitudes of beautiful women dancing; his response was to create a video that featured only himself. As he predicted, the song was still a huge success, but the phenomenon of foreign language and unusual dancing made the video a cult hit in other countries as well.

My explanation:

It's just a really catchy song -