Josh gives thanks -- yes, even during 2020 -- with Diners, Drive-Ins and Dives star Guy Fieri, Cheryl Hines of Curb Your Enthusiasm and Alfonso Ribeiro of The Fresh Prince. World Champion Turkey Carver Paul Kelly shows Josh how to slice up his bird.

Josh lifts off into outer space to interview Mayim Bialik from "Big Bang Theory," NASA astronaut and moonwalker Charlie Duke and star of "2001: A Space Odyssey" Keir Dullea. Later, Josh takes on zero gravity to see if he can survive the "vomit comet."