Derek Hough reveals his dream Dancing With the Stars contestant, his favorite dancing partners, and the most difficult thing about being a judge.

Dancing With the Stars' pro-turned-host Julianne Hough has revealed which contestants would be on her DWTS Mount Rushmore.

But throughout the season, it was American Idol alum Kellie Pickler and her partner Derek Hough who were Zendaya and Val’s biggest competitors. Ultimately, the Mirrorball trophy ended up going ...