Chalkboard: Tar is not a plaything

Couch Gag: The family does a short dance and then sits down.

When shown in the UK, many lines of sexual innuendo (including references to Homer's secretary being a homosexual) were edited out in order to garner a PG rating instead of a 12.

TV Show Host: Ok, the capital of North Dakota is named after what German ruler?
Homer: Hitler.
Marge: Hitler, North Dakota?

Karl: You dont belong here. You're a fraud and a phony and it's only a matter of time until they find you out.
Homer: Who told you?
Karl: You did! [...]

Mr. Burns: I'm only eighty-one. You may find this hard to believe, but in my salad days, my crowning glory was a bright shock of strawberry blond curls. [...]

Homer: [...] You've ruined your father. You've crippled your family. And baldness is hereditary.

Burns: Wait. Who is that young go-getter?

(The Simpson family watches a game show called Grade School Challenge on TV)
Game Show Host: Okay, the capital of North Dakota is named after what German ruler?
Homer: Hitler!
Marge: (Questioning Homer) Hitler, North Dakota?
Patty and Selma: (In unison) Bismarck.
Girl Contestant: Bismarck!
Bart: (To Homer) Hitler?
Homer: Hey, I'm still beating you, boy.
Game Show Host: Okay, the colors of the Italian flag are red, white, and what?
Bart: Blue!
Homer: Yellow!
Bart: Orange!
Selma: Green.
Bart: Red!
Patty: Green.
Bart: Purple!
Homer: Red! White! Black! Green!
Girl Contestant: Green.
Homer: I was right! (Claps)

The floss changes color in the cabinet. When Homer first opens it, the floss container is white. Then the morning that Homer discovers his new hair, the floss container in the cabinet is blue.

When talking to the doctor about his health insurance, Homer's hairline above his ear vanishes, then appears again.

Sampson And Delilah

The episode title, "Simpson and Delilah," parodies the biblical story of a long-haired, strong Jew named Sampson, and the evil, seductress Philistine, Delilah.

It's A Wonderful Life

In the scene when Homer runs joyously through downtown with his hair, we see a visual of a church bell ringing. The visual itself, the way it fades in, and the emotion in the scene could all be a reference from the end of the 1946 film It's A Wonderful Life.