I saw one of the weirdest videos I've seen in a long time. It's a band called Die Antwoord and the song is "I Fink U Freeky."
http://www.youtube.com/watch?v=8Uee_mcxvrw
They were on Letterman about a month ago. It was pretty funny because Letterman seemed so confused by them and their performance.
http://www.youtube.com/watch?v=VoHbI-955uQ