Call Me Maybe by Carly Ray Jepsen
The video I'm posting below is not the original (which is great too) but instead it's a Chatroulette version by Steve Kardynal. He is hilarious. You can find other videos he's done on his YouTube channel.
I absolutely love the expression of some of the guys on the left screen. Funny stuff right there! There was one super cute cutie on there that if I wasn't married I wouldn't mind giving my digits too. ;)
You can get the MP3 single for only $.99 on Amazon.