Boo! TV

1. 'The Twilight Zone': Nightmare at 20,000 Feet

These days it's hard to imagine anything scarier with air travel than watching security toss your $40 jar of Bumble and Bumble hair masque (curse you, three ounce limit!), but in one 1961 episode of “The Twilight Zone,” a young William Shatner had to suffer through a flight as the only passenger who could see a taunting, bug-eyed gremlin frolicking on the plane's left wing. Part psychological thriller, part horror, "Nightmare at 20,000 Feet" might just be the most chilling and suspenseful short ever to grace the small screen.