The Geek's Guide to the Galaxy is a podcast hosted by author David Barr Kirtley and produced by Lightspeed Magazine editor John Joseph Adams. The show features conversations about fantasy & science fiction in books, movies, games, and comics, as well as related subjects such as science, history, and critical thinking. Guests have included Neil Gaiman, George R. R. Martin, Richard Dawkins, Wil Wheaton, Bill Nye, Margaret Atwood, Neil deGrasse Tyson, and Ursula K. Le Guin.