1. Leonard Nimoy
   William Shatner
2. George Tekai
   DeForest Kelley

"Nightmare at 20,000 Feet," aired in 1963, has become one of the most well-known episodes of the original "The Twilight Zone" series. It was Shatner's second appearance on the show — he also starred in a 1960 episode called "Nick of Time."

1. Carol Channing
   Lucille Ball
2. Carol Burnett
   Mary Tyler Moore

Entitled "Cavender Is Coming," this 1962 episode has more of a comedic tone than most episodes of "The Twilight Zone." It featured a laugh track when it first aired, which has since been removed from rerun, DVD and streaming versions.

1. Peter Fonda
   Jack Nicholson
2. Dennis Hopper
   Martin Sheen

This episode from 1963 is called "He's Alive." Reportedly, "The Twilight Zone" creator Rod Serling wrote a longer version of the script to be made into a feature-length film, but it was never produced.

1. Tom Selleck
   Telly Savalas
2. James Garner
   Peter Falk

Falk played Ramos Clemente in this 1961 episode — a character modeled after Fidel Castro. The dictator becomes mad with paranoia when a magical mirror suggests his four confidants are traitors.

1. Robert Duvall
   Robert De Niro
2. Harvey Keitel
   Al Pacino

Duvall is Charley Parkes in this 1963 episode, a man committed to a psychiatric hospital because he believes the figures inside a museum dollhouse are alive. The episode's twist ending reveals that all is not as it seems.

1. Robert Redford
   Dustin Hoffman
2. Clint Eastwood
   Paul Newman

The opening narration for this episode states, "An old woman living in a nightmare, an old woman who has fought a thousand battles with death and always won. Now she's faced with a grim decision — whether or not to open a door. And in some strange and frightening way she knows that this seemingly ordinary door leads to the Twilight Zone."

1. Patrick Stewart
   James Doohan
2. Leonard Nimoy
   Walter Koenig

The title of this 1961 episode, "A Quality of Mercy," comes from a well-known line from the Shakespeare play "The Merchant of Venice." Recited as part of the show's closing narration, the quote is, "The quality of mercy is not strained, it droppeth as the gentle rain from heaven upon the place beneath."

1. Dana Carvey
   Will Ferrell
2. Tracey Morgan
   Adam Sandler

Originally aired on April 1, 2019, "The Comedian" also stars Kumail Nanjiani of "Silicon Valley" fame. It follows the story of a comedian who discovers that when he mentions a person as a part of his stand-up act, they mysteriously disappear.

1. Ron Howard
   Jodie Foster
2. Sean Penn
   Mel Gibson

Before he was Opie on "The Andy Griffith Show" or Richie on "Happy Days," Howard played a sweet young boy in a town where time seemed to stand still. This was Howard's third credited TV role.

1. Paul Newman
   Burt Reynolds
2. Dustin Hoffman
   Gregory Peck

Entitled "The Bard," this episode aired in 1963, while Reynolds was a regular on the popular Western TV drama "Gunsmoke." Reynolds starred on numerous TV shows before scoring his breakthrough film role in the 1972 thriller, "Deliverance."

1. Betty White
   Bea Arthur
2. Cloris Leachman
   Charlotte Rae

Considered by Time and TV Guide to be one of the best episodes of "The Twilight Zone" original series, "It's a Good Life" aired in 1961. It was based on a short story of the same name, written by author and screenwriter Jerome Bixby.

1. Patrick Stewart
   George Takei
2. DeForest Kelley
   James Doohan

After "The Encounter" first aired in 1964, it was withheld from syndication due to its touchy (at the time) racial subject matter. It didn't appear on TV again until Jan. 1, 2016, as part of Syfy's annual "TheTwilight Zone" New's Year Eve marathon.

1. Don Rickles
   Bob Hope
2. Bob Newhart
   Milton Berle

Called "Mr. Dingle, the Strong," this episode tells the story of Luther Dingle, a meek, unsuccessful man (played by Burgess Meredith) who's given superhuman strength by a two-headed Martian. Rickles plays the gambling barfly who bullies him at the bar.

1. Michael Landon
   Lee Majors
2. Carroll O'Connor
   Telly Savalas

Savalas was already a successful actor when he appeared in this 1963 episode, having been nominated for an Academy Award a year prior for his supporting role in the film "Birdman of Alcatraz."

1. Nick Offerman
   Chris Pratt
2. Adam Scott
   Aziz Ansari

This episode is entitled "Nightmare at 30,000 Feet," which is a play on the title of the 1963 "The Twilight Zone" classic, "Nightmare at 20,000 Feet." While both episodes take place on a plane, their plots are completely different.

1. Milton Berle
   Jonathan Winters
2. Bob Newhart
   George Burns

Jonathan Winters's career spanned more than 60 years. He appeared on hundreds of television shows and films, including "Hee-Haw" and "Mork & Mindy," and received eight Grammy nominations for Best Comedy Album.

1. Mickey Rooney
   Eli Wallach
2. Burgess Meredith
   Slim PIckens

in addition to the 1959 episode, "Time Enough at Last," Meredith appeared in three other episodes of "The Twilight Zone" — "Mr. Dingle, the Strong", "The Obsolete Man" and "Printer's Devil."

1. Jack Lemmon
   Walter Matthau
2. Tony Randall
   Jack Klugman

Between 1960 and 1963, Klugman appeared in the episodes "A Passage for Trumpet, "A Game of Pool," "Death Ship" and "In Praise of Pip." The actor ties with Burgess Meredith for the most guest appearances in a starring role on the series.

1. Jackie Gleason
   Art Carney
2. Jerry Mathers
   Tony Dow

The title of this 1960 episode, "The Night of the Meek," comes from a biblical quote from Matthew 5:5, "Blessed are the meek, for they shall inherit the earth." More than 20 years later, Carney would play Santa again in the 1984 move "The Night They Saved Christmas."

1. Charles Bronson
   Arnold Schwarzenegger
2. Robert De Niro
   Clint Eastwood

Starring opposite Bronson in this two-person episode from 1961 was Elizabeth Montgomery, the actress best known for playing Samantha Stephens on the popular television show "Bewitched."

1. Greg Kinnear
   David Schwimmer
2. Ted Danson
   Matthew Perry

This episode also stars Steven Yeun from "The Walking Dead." It's about a mysterious man who curiously claims to be named "A. Traveler" and crashes a small police station's Christmas party.

1. Frankie Darro
   Carl Switzer
2. George McFarland
   Mickey Rooney

Born in 1920, Mickey Rooney's career as an actor, comedian and radio personality spanned nine decades. He appeared in more than 300 films in his lifetime and worked well into his 90s.

1. Patrick Stewart
   James Doohan
2. DeForest Kelley
   Walter Koenig

This episode tells the story of Peaceful Valley, New Mexico, a remote town that possesses incredible extraterrestrial technology but refuses to share it with the rest of the world.

1. Julie Newmar
   Tina Louise
2. Eva Gabor
   Marlo Thomas

Newmar is perhaps best known for playing Catwoman on the '60s show "Batman." She also had guest roles on popular shows such as "F Troop," "Bewitched, "The Beverly Hillbillies" and "Get Smart."

1. Fred MacMurray
   Martin Landau
2. Peter Graves
   James Cromwell

This was Landau's second appearance on "The Twilight Zone." Five years earlier, he played a sadistic bully in the 1959 episode "Mr. Denton on Doomsday," which was the third episode of the show's first season.

1. Sydney Pollack
   Clint Eastwood
2. John Cassavetes
   Warren Beatty

Pollack acted in over 30 movies and TVs shows during his career, and directed more than 20 films. He won an Academy Award for Best Director for his 1985 movie "Out of Africa," which also won the award for Best Picture.

1. Dennis Hopper
   Dennis Weaver
2. James Garner
   Steve McQueen

Weaver won an Emmy Award for best supporting actor (continuing character) in a dramatic series for his work in the long-running television show "Gunsmoke." He also played Sam McCloud from 1970 to 1977 on the TV drama "McCloud."

1. Dean Stockwell
   Gene Hackman
2. Donald Sutherland
   James Garner

Stockwell began his career as a child actor in the 1940s and continued to work into his adulthood. He's perhaps best known for playing Al on the TV show "Quantum Leap," and was nominated for a best supporting actor Oscar for the 1988 movie "Married to the Mob."

1. Denholm Elliott
   Donald Pleasence
2. Alec Guinness
   Richard Burton

While his career spanned almost 50 years, Pleasence is perhaps best-known for his role as psychiatrist Dr. Samuel Loomis in the original 1978 "Halloween" film and four of its sequels.

1. Janet Leigh
   Grace Kelly
2. Tippi Hedren
   Vera Miles

Miles plays Millicent Barnes in this episode, a young woman who becomes convinced, while waiting for a bus, that her evil doppelgänger is trying to replace her. Reportedly, this episode was the inspiration for Jordan Peele's 2019 movie "Us."

1. Karl Malden
   Harry Morgan
2. Roddy McDowall
   Eli Wallach

McDowall is best known for playing the characters of Cornelius and Caesar in the "Planet of the Apes" movies, along with the character of Galen in the "Planet of the Apes" spin-off TV show. He also starred in the 1985 hit horror flick "Fright Night."

1. Jack Warden
   Gary Busey
2. Lee Marvin
   Sam Elliott

In addition to this Western-themed episode, Marvin appeared in a 1963 installment of "The Twilight Zone" called "Steel. That one was about a robotic boxer in the futuristic world of 1974.

1. Charlie Chaplin
   Buster Keaton
2. Douglas Fairbanks
   Harold Lloyd

Entitled "Once Upon a Time," this episode cleverly opens and closes in the style of a silent film. Keaton also performs a number of the same slapstick gags he was known for in the 1920s.

1. Jackie Cooper
   Norman Fell
2. Jack Albertson
   Red Buttons

This 1964 episode, entitled "Caesar and Me," is sometimes confused with the 1962 episode called "The Dummy." Both installments focus on ventriloquists with very problematic puppets.

1. Jonah Hill
   Seth Rogan
2. James Franco
   Paul Rudd

Jordan Peele also appears as himself in this episode, which was the finale for "The Twilight Zone" revival's first season. The very meta story is about one of the show's screenwriters trying to track down a mysterious figure.