In the Internet world something can be relativity unknown one day and a worldwide sensation the next. Gangnam Style is a perfect example. If you saw SNL Saturday and said "what is Gangnam Style?" Let me catch you up.

First, what is it? Gangnam Style is a song by South Korean rapper Psy. Psy is the stage name of Park Jae-sang. He is popular in Korea for his funny videos and shows.

The video for the dance song has caught fire online and become the latest viral hit and an iTunes best seller. The title refers to an upscale part of Seoul, South Korea. Psy compares it to Beverly Hills.

Here is the video:

And from SNL