Terry Crews, Simon Cowell, Sofia Vergara, Heidi Klum, and Howie Mandel ("America's Got Talent"); JoJo Siwi ("The J Team"); Baylee Littrell and his dad, Backstreet Boy's Brian Littrell, and mom, Leighanne Littrell; Damon Dash remembers singer Aaliyah, on the 20th anniversary of her death; guest co-hostess Sydney Sweeney;—anonymous