"Nightmare at 20,000 Feet" directed by Richard Donner one of his first works, is just wonderful it features William Shattner as a panic stricken man on an airplane. This episode is wonderfully done, and well remembered for one of the Twilight Zone's best and is well known over the years in pop culture memory. The plot has the Shattner character as a man that's just recently gotten out of rehab, because he had suffered a mental and nervous breakdown, and getting on a plane will almost certain test his limits. In fact his last breakdown was due to a flight. And boy does his imagination take a turn for the worst when he sees outside on the wing of the plane a furry like creature! This creature stares him in the face! The big question is it really real, or just a test of imagination, because he's the only one to see it. Really a well done episode mostly remembered for Shattner and the terror on a plane with a creature on the wing, this episode just plays with your mind and imagination so well.
Review of Nightmare at 20,000 Feet
