I always loved the one with Anne Francis as the woman who goes to this department store to get a gold thimble for her mother and ends up getting trapped inside for the whole night. I guess I shouldn't spoil it for you ETs and Matto Grasso Indians who've never seen it but that one always spooked me since I was a kid.

I also love the one about the guy that lived in NYC but had the curse of an African tribal chief put on him and his wife believes in it and he thinks she's going crazy. Excellent ending on that one!

I also like the one with Cliff Robertson and Charles Aidman where the three astronauts return to earth from this mission and vanish literally without a trace. There was no explanation for what happened but that's what makes it creepy.

Then there's the immortal ones like The Hitchhiker and The Monsters Are Coming to Maple Street and the first episode where Earl Holliman finds himself in a totally deserted town (although they changed the ending from the actual story and so eliminated the Twilight Zone aspect).