The "Dancing With the Stars" judge shared details of a special moment with Mark Ballas when he was a guest judge.

Derek Hough is very open for Mark Ballas returning as a permanent judge on Dancing With the Stars. “I’m absolutely here for it,” Hough, 39, exclusively told Us Weekly following week 5 of Dancing With the Stars on Tuesday5.

Ballroom pro Mark Ballas’ Dancing with the Stars return is special for longtime viewers, who watched him dance for 20 seasons. From 2005, Ballas was a ballroom favorite. But how many mirrorballs did he win?

Dancing with the Stars’ guest judge Mark Ballas tells Fox News Digital he was one of the first calls that fellow alum Derek Hough made when they learned of his wife’s tragic brain surgery news.

Dancing with the Stars' legend Mark Ballas makes an electrifying ballroom return for 'Dedication Night' where he'll judge the celebs.