The Simpsons are the terrorists! This long running animated sitcom may be the "grampa" of all the television shows out there, currently in its astonishing 24th season. However, just because it's "old," doesn't mean it can't keep up with the latest trends. This week's new episode, ironically entitled "Gorgeous Grampa", includes a memorable opening couch gag with the entire family performing The Harlem Shake, a viral dance craze that started last month. Take a look at the couch gag, along with the original YouTube video by the Australian troupe The Sunny Coast Skate that started it all.

Homer's obsession with the TV show "Storage Battles" leads the family to discover Grampa's past identity as "Gorgeous Godfrey," the most feared, villainous man in pro-wrestling history. What's more, he was once revered by a young Montgomery Burns who now convinces Grampa to get back in the ring. But when Bart starts to adopt some of his grandfather's former cheating ways, Grampa must reconcile with his past before it's too late on the "Gorgeous Grampa" episode of The Simpsons airing Sunday, March 3 (8:00-8:30 PM ET/PT) on FOX.