Ooookaaay, so now everyone wants to know how to do “The Jerk”–this dance is actually based on an old hit and corresponding dance from the 60s called “The Jerk” written by Don Julian that scored a Top 10 position in 1964. It was the inspiration for the recent hit song “You’re a Jerk”
If you really like these guys and you don’t have their album yet you really ought to get it
For more information on how this got started, The Huffington Post (of all places–I know, right?) has got a pretty good article on it.