The SF Signal Pocast hits its 60th episode today. Always a great podcast, this week's episode is either improved or debased by the introduction of... me. SF Signal kindly asked me to interview David S. Goyer ( Academy Award-nominated screenwriter of the blockbuster films The Dark Knight and Batman Begins) and Michael Cassutt (The Twilight Zone, Red Moon) about their new novel Heaven's Shadow. Both authors impressed me mightily with their knowledge about both classic and contemporary literary SF and the ideas they have brought to bear in Heaven's Shadow. Please check out the podcast and the book.