Nastia Liukin Dances Emotional Viennese Waltz on 'Dancing with the Stars' - Watch Now!

Nastia Liukin and Derek Hough are reunited at the end of the evening for a Viennese Waltz during Dancing With the Stars on Monday night (May 11) in Hollywood.

The 25-year-old gymnast danced almost the entire dance with Derek – and then at the end, met with judge Len Goodman on the dance floor and finished up the last few seconds with him. It was especially emotional because during the segment, Len disclosed that he really could not dance anymore due to health issues.

Nastia and Derek finished up the night with a perfect score all around. Congrats!