I've always been a fan of The Twilight Zone (the original) and last Friday actually marked the 50th anniversary of the show's debut on CBS. I even bought the whole entire series on DVD. From the sci-fi possibilities to the twist endings to the sentimental and touching stories, this series had everything, including terrific writing and terrific acting.
While I remember watching the Twilight Zone marathons that would run on Independence Day weekend as a kid, it's better having all the episodes because there were just so many good ones. It's almost impossible to come up with a list of only 10 favorite/best/most memorable episodes. I still enjoy the original twist endings, always keeping in mind that this series was written over 50 years ago.
Besides being entertaining, the series also made you think, with some episodes being allegories of social issues and fears at the time, such as the war and nuclear apocalypse. I think that if you took the best shows of the series, you'd have a list with quality and quantity that would rival any of the best tv shows ever.
If anyone wants to borrow a season or two, let me know. Otherwise, you can catch a few episodes on CBS's website.