Best known for his unpredictable appearances on both the US and UK versions of Whose Line is it Anyway?, Greg Proops has a hit Podcast called “The Smartest Man in the World” ( which he records live in Australia, New Zealand, Montreal, Edinburgh, Amsterdam, San Francisco, Austin, London, Paris, the Caribbean, and Cleveland. His latest book, The Smartest Book in the World, is based on the podcast. Proops has done voice work for Hell and Back, Star Wars: The Phantom Menace, The Nightmare Before Christmas, and he really was Bob the Builder.