Lip Sync Battle

Serena Williams guest stars in a husband vs. wife battle as tennis legend Andy Roddick takes on actress and supermodel Brooklyn Decker.

Special guest John Legend joins the crew as singer/songwriter Andy Grammer takes on "Riverdale's" Vanessa Morgan, and they battle it out for the LSB championship belt.

It's a "Superstore" super battle when Ben Feldman battles co-star Lauren Ash for the LSB Championship belt.

It's a small-screen battle royale as Brandon Micheal Hall of "God Friended Me" takes on "black-ish" star Marcus Scribner for the Lip Sync Battle belt.

Fresh off "Sesame Street," Big Bird squares off against actor Jason Schwartzman.

Actor Nico Tortorella ("Younger") squares off against co-star Molly Bernard.

American Ninja Warrior hosts Matt Iseman and Akbar Gbaja-Biamila go head to head and battle it out in the ultimate arena, the Lip Sync Battle stage.

Actor-rapper Pooch Hall takes on his "Ray Donovan" on-screen brother, Dash Mihok.

Prince Royce and singer-internet sensation Lele Pons heat things up on the stage as they compete for the coveted championship belt.

It's a battle for the ages as Serayah ("Empire") takes on Rotimi ("Power")