Derek Hough has worked with a K-pop singer.
7; placed: 6th=== World of Dance ===In May 2017, Hough joined NBC's new dance competition series World of Dance as a judge, alongside Jennifer Lopez and Ne-Yo and host/mentor Jenna Dewan
 In rehearsal on October 4, 2008, Hough tripped and fell, hitting his head on the floor and momentarily blacked out

