As of this morning, that is up to over 250,000,000 views on YouTube! On first viewing it seems like something from another universe, but it gets funnier after a couple of viewings and you may, as I did, find yourself calling out "Gangnam Style!" and cackling maniacally for no good reason. This is a kind of humor that music is particularly good at. Think Robin Williams at his most manic. Not to everyone's taste? You bet!
For a different kind of Asian pop music, have a look at this Japanese video:
The leader, Genki Sudo, is a retired martial arts champion. He writes the songs and creates the choreography. No special effects, by the way, they just do all those moves.