Remember that monster on the wing of the airplane? William Shatner saw it on The Twilight Zone, John Lithgow saw it in the movie-even Bart Simpson saw it. "Nightmare at 20,000 Feet" is just one of many classic horror stories by Richard Matheson that have insinuated themselves into our collective imagination. Here are more than twenty of Matheson's most memorable tales of fear and paranoia, including: "Duel," the nail-biting tale of man versus machines...