Alfonso Ribeiro promotes "Dancing with the Stars" and "America's Funniest Home Videos."

Jennifer welcomes first-grade teacher Sonja White from Desoto, Texas, who went viral after she created a mock trip to Mexico for her students in celebration of Hispanic Heritage Month.

Deon Cole discusses hisNetflix stand-up special, "The Improv: 60 & Still Standing."

12-time Olympic medalist Ryan Lochte will teach Jennifer how to swim.

Jennifer welcomes back 6-year-old Luke Tillman "Pastor Luke," and his parents Catrina and Ezra Tillman, from Fort Lauderdale, FL, who made his first appearance on the show during season one when he went viral for baptizing his Paw Patrol Dog in the bathtub.