Trivia: The weapons and giants' uniforms were reused from the movie Forbidden Planet.
Trivia: The title is taken from Richard II, Act III, Scene III.
Trivia: The town square set was later used in the Back to the Future films.
Trivia: The long library steps were the same as the steps used in The Time Machine and The Twilight Zone - A Nice Place to Visit.
Trivia: Originally Rod Serling wanted Richard Egan to do the narration.
People Are Alike All Over - S1-E25
Trivia: The pretty blond Teena was played by Susan Oliver, who played Veena in the original pilot episode (later made into a two parter) of the Original Star Trek starring Jeffrey Hunter as Captain Chris Pike.
Will the Real Martian Please Stand Up - S2-E28
Trivia: The name of the bus line is Cayuga, which happens to be who The Twilight Zone series was made by, Cayuga Productions, Inc. That company was created by Rod Serling himself.
The Eye of the Beholder - S2-E6
Trivia: When the bandages are finally removed, the beautiful face of Donna Douglas, best known as Ellie May Clampett in the Beverly Hillbillies, is revealed. But the voice while bandaged was provided by Maxine Stewart.
Trivia: The inspiration for The Simpsons Treehouse of Horror VI segment "Homer3."
Trivia: Future Star Trek cast members William Shatner, James Doohan, Leonard Nimoy, and George Takei all appear in at least one episode of The Twilight Zone.
People Are Alike All Over - S1-E25
Trivia: Several props from the movie Forbidden Planet are used.
Trivia: The jazz heard playing on the radio in the empty diner is heard on many other programs.
He's Alive - S4-E4
Trivia: If Nick looks familiar, it's because he's played by Howard Caine, the actor who makes a number of appearances on Hogan's Heroes, most notably as Gestapo Major Wolfgang Hochstetter.
Trivia: In this episode, the little girl's father is played by James Doohan, better known as Commander (later Captain) Montgomery "Scotty" Scott, Chief Engineer of the U.S.S. Enterprise.
Nick of Time - S2-E7
Trivia: The role of Don S. Carter in this episode was played by a younger William Shatner, who is better known as the famous Captain James T. Kirk in Star Trek. He also starred as the main character in S5: Ep3, "Nightmare at 20,000 Feet."
Answer: It's explained in the episode. The aliens are experimenting to see how humans react to various scenarios. This just happens to involve them using super strength.
Thanks. It's been a long time since I saw the episode so I forgot.