I adore
The Twilight Zone - everyone in my house knows that on New Year's Day and Fourth of July (roughly) the TV is MINE. I watch the marathons until I can't see straight. I've been dropping hints to Jersey Guy about the box set, but he isn't biting just yet... grr...
My favorite episodes are:
Midnight Sun - two women trying to stay alive as the earth breaks free from its orbit and is moving closer to the sun.
Time Enough at Last - heartbreaking.
Masks - a dying millionaire gathers his family at Mardi Gras, and makes them wear masks that reveal their true selves - otherwise they won't inherit his $$
Terror at 20,000 Feet - William Shatner and the gremlin only he can see. The gremlin's trying to pull the wires out of an airplane wing in mid-flight, and no one believes Shatner (who's just gotten out of an institution after having a nervous breakdown.)
There are others, but I can't remember the exact titles.