The 23-year-old DJ released "Harlem Shake" last May, but it wasn't until Feb. 2 that the first video emerged featuring a sillydance to the song. (A YouTube denizen known as Filthy Frank gets that credit.) A version by a crew of Australian skateboarders established the jump-cut blueprint, and an entry by employees of Maker Studios, a digital media company, inspired other office imitators.
