Mark Malkoff, comedian and author of Love, Johnny Carson: One Obsessive Fan’s Journey to Find the Genius Behind the Legend (Penguin Random House, 2025), talks about his book on Johnny Carson, which focuses on the decade the late-night legend spent hosting the Tonight Show from New York; plus he discusses how Carson invited Jim Henson's Muppets on the show, including an episode hosted by Kermit the frog.