Madonna and special guest star Psy teamed up for an epic live rendition of "Gangnam Style" at her concert in NYC's Madison Square Garden last night.

Appearing unannounced, the Korean rapper joined Her Madgesty on stage to perform the song that has taken the planet by storm in the past few months:

Posted in: Madonna

Of all the Gangnam Style parodies, PSY might take a particular liking to this one.

The rapper's Korean brethren at the renowned Massachusetts Institute of Technology (MIT) took a long break from studying apparently, creating a Boston-themed take on the viral smash.

Posted in: Gangnam Style