Ellen’s favorite dancer, tWitch, is taking over as guest host, and his wife Allison Holker Boss joins as guest DJ! Get on your feet, because DEREK HOUGH is here! The accomplished entertainer is best known for his work as a pro partner on “Dancing with the Stars,” which he won a record-breaking six times! For the past four seasons of "World of Dance," Derek has been a judge alongside Jennifer Lopez and Ne-Yo! Now, he’s back as a judge on the current season of “Dancing with the Stars,” and he’ll share his thoughts about how the contestants stack up, and what it’s been like filming the hit series during the pandemic. Then, get ready for some magnificent moves, because MDC 3, winners of “World of Dance” Season 4, are here to perform! Watch Madi Smith, Diego Pasillas, and Emma Mather as they do an incredible routine on stage!