Stephen Lang is known for his roles in the films Avatar, Tombstone, Public Enemies, Gods and Generals, and Last Exit to Brooklyn. His work on Broadway includes A Few Good Men, Death of a Salesman, The Speed of Darkness, and Hamlet. On television, he has appeared on Terra Nova, Crime Story, and The Bronx is Burning.
David Langford is a writer, critic and SF fan who has won innumerable Hugo Awards for his fan writing and for his news magazine ANSIBLE, a legend in SF and fantasy circles. He has been involved with Terry Pratchett's Discworld since the very beginning, and has compiled two Discworld quizbooks, THE UNSEEN UNIVERSITY CHALLENGE and THE WYRDEST LINK.