Lin-Manuel Miranda and 'Weird Al' Yankovic (single "The Hamilton Polka"); Macaulay Culkin (website BunnyEars.com); the Olympic champion U.S. men's curling team. Also: Francis and the Lights performs.
Starts: Jimmy Fallon, Lin-Manuel Miranda, 'Weird Al' Yankovic, Macaulay Culkin, John Shuster, Steve Higgins, Tyler George, The Roots, Matt Hamilton, John Landsteiner, Joe Polo, Francis and the Lights