Tom Bergeron made his long-awaited return to the Dancing With the Stars ballroom to mark the 20th anniversary of the show. Bergeron, 70, served as a guest judge during the Tuesday, November 11, episode of the ABC reality competition series, joining Carrie Ann Inaba, Bruno Tonioli and Derek Hough at the judges table to score the remaining couples' dances. Current host Alfonso Ribeiro kicked off the night by asking his dear friend Bergeron to introduce the show. "I'd love too," he said, shortly before new cohost Julianne Hough started tearing up when they all walked down the ballroom steps.