The Twilight Zones of Rod Serling - all of them

There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call The Twilight Zone.
— Rod Serling

Note the link above is to the 1959 Series, starting at episode 1.

Other TV Series:

1985 Series
2002 Series
2019 Series

Movies:

1983 movie - Twilight Zone
1994 movie - Twilight Zone - Rod Serling's Lost Classics

The Twilight Zone is an American media franchise based on the anthology television series created by Rod Serling in which characters find themselves dealing with often disturbing or unusual events, an experience described as entering "the Twilight Zone". The episodes are in various genres, including fantasy, science fiction, absurdism, dystopian fiction, suspense, horror, supernatural drama, black comedy, and psychological thriller, frequently concluding with a macabre or unexpected twist, and usually with a moral. A popular and critical success, it introduced many Americans to common science fiction and fantasy tropes. The first series, shot entirely in black-and-white, ran on CBS for five seasons from 1959 to 1964.

The Twilight Zone followed in the tradition of earlier television shows such as Tales of Tomorrow (1951–53) and Science Fiction Theatre (1955–57); radio programs such as The Weird Circle (1943–45), Dimension X (1950–51) and X Minus One (1955–58); and the radio work of one of Serling's inspirations, Norman Corwin. The success of the series led to a feature film (1983), a TV film (1994), a radio series (2002–12), various literature, theme park attractions and various other spin-offs that spanned five decades, including three revival television series. The second series (1985–89) ran on CBS and in syndication in the 1980s, while the third series ran on UPN (2002–03). The fourth Twilight Zone series, helmed by Jordan Peele, was released on CBS All Access from 2019 to 2020.

TV Guide ranked the original TV series #5 in their 2013 list of the 60 greatest shows of all time and #4 in their list of the 60 greatest dramas

Wikipedia

Mr. Serling was one of the first matire d's of the 13th Floor, a man of exquisite talent, superhuman patience, and exacting intelligence, constantly expanding the hotel and inviting new guests and residents. Many first encountered the 13th Floor through his work, and he is well known amongst chaos magicians as one of the greats who warped the world from the 50s into something much wilder and better than had been before. Mr. Serling's influence cannot be underestimated, for he built monuments of literature and thought not only within consensual reality, but within dreams and imagination of his viewers.

A toast to the late great Mr. Serling - your legacy is what built this hotel, and your door to the Twilight Zone was the gateway to unlocking the worlds within our imagination. L'chayim!