Watching movies appeals to our voyeuristic nature, and watching a movie about spies is voyeurism times two: You watch those spies watch... whomever. Our cinematic spies run the gamut from the noble (Robert Redford, Three Days of the Condor) to nefarious (Timothy Hutton, The Falcon and the Snowman), the debonair (Sean Connery's James Bond) to disheveled (John Malkovich, Burn After Reading). Which one deserves the top spot in our tournament of sleuths?