Then: Korn has been a major metal act since 1994, but they were really only pop stars for a few short years, starting with 1998's Follow the Leader. It was a weird moment, when rap-metal and teen-pop were equally at home on MTV – Korn's aggro freak-outs "Falling Away From Me" and "Freak On A Leash" could share the airwaves with 'N Sync's "Bye Bye Bye" and Backstreet Boys' "I Want It That Way," and somehow it all made sense.

Now: Guitarist Brian "Head" Welch and drummer David Silveria have left the band, but three out of five original members are still out there playing big shows and releasing new music every couple of years. Korn's most recent album, last year's Path of Totality, featured multiple collaborations with Skrillex. They aren't quite as massive as they were when "Freak On A Leash" was all over TRL, but they're doing much better than many of their nu-metal peers from that era. And earlier this year, Welch played with the band for the first time in years, so a reunion of the 1999 line-up isn't completely out of the question.