Is Ariana Grande's New Song 'Imagine' About Her Late Ex Mac Miller? Why Fans Are Convinced
Derek Hough and Access' Scott Evans make a little push-up wager ahead of taking part in "Celebrity Ninja Warrior" for Red Nose Day. Plus, Derek, who tackled the course last year, reveals why he decided to return for another go. The "Celebrity Ninja Warrior" special airs Thursday at 8/7c on NBC.