Guy X is a 2005 black comedy war film directed by Saul Metzstein, based on the novel No One Thinks of Greenland by John Griesemer. The film stars Jason Biggs, Natascha McElhone, Jeremy Northam, and Michael Ironside, and follows US Army Corporal Rudy Spruance (Biggs), who is mistakenly posted to a military base in Greenland.