The "Harlem Shake" phenomenon was as faddish as viral memes get: It came out of nowhere, was omnipresent for about two months, and then disappeared so fully that less than a year later it seems like something that happened a decade ago. But hey, it's not like we didn't get anything out of it. The meme lifted the electronic producer Baauer out of obscurity, made history as the first viral meme to hit the top of Billboard's Hot 100 thanks to a new rule that factors in YouTube views, and many of us have vague yet pleasant memories of wilding out on camera for a minute in our own "Harlem Shake" videos. —M.P.