Guest Stars William Shatner as Himself ("Captain Kirk" - Star Trek) Richard Dreyfuss as Himself ("Roy Neary" - Close Encounters of the Third Kind) Zoe Saldana as Herself ("Lt. Uhura" - Star Trek (2009 - ) / "Neytiri" - Avatar) John Carpenter as Himself (Director & Writer - Dark Star) Anthony Daniels as Himself ("C-3PO" - Star Wars) Ronald D. Moore as Himself (Executive Producer - Battlestar Galactica (2004-9)) Arthur C. Clarke as Himself (Author - 2001: A Space Odyssey (archive footage)) Kenny Baker as Himself ("R2-D2" - Star Wars) Kim Stanley Robinson as Himself (Author - Mars Trilogy) Nathan Fillion as Himself ("Capt. Mal Reyolds" - Firefly) Veronica Cartwright as Herself ("Lambert" - Alien) Nichelle Nichols as Herself ("Lt. Uhura" - Star Trek) Nicholas Meyer as Himself (Director - Star Trek II : The Wrath of Khan) Ursula K. Le Guin as Herself (Author - The Left Hand of Darkness) Rick Carter as Himself (Production Designer - Avatar) Alan Walbridge Ladd Jr. as Himself (President, 20th Century Fox (1976-79)) Credit Only John Landis as Himself (Director) Karen Gillan as Herself ("Amy Pond" - Doctor Who (2010-2012)) Christopher Lloyd as Himself ("Dr. Emmett Brown" - Back To The Future) Haley Joel Osment as Himself ("David" - A.I. Artificial Intelligence) Rutger Hauer as Himself ("Roy Batty" - Blade Runner) Rian Johnson as Himself (Director & Screenwriter - Looper) David Tennant as Himself ("The Doctor" - Doctor Who (2005-2010))