Marx Brothers
Live-action television

Harpo Marx appeared as himself on a 1955 episode of I Love Lucy in which first, he performed " Take Me Out to the Ball Game " on his harp, then, he and Lucille Ball reprised the mirror routine from Duck Soup, with Lucy dressed up as Harpo. Lucy had worked with the Marxes when she appeared in a supporting role in an earlier Marx Brothers film, Room Service. Chico once appeared on I've Got a Secret dressed up as Harpo; his secret was shown in a caption reading, "I'm pretending to be Harpo Marx (I'm Chico)".

Hawkeye Pierce (Alan Alda) on M*A*S*H occasionally put on a fake nose and glasses, and, holding a cigar, did a Groucho impersonation to amuse patients recovering from surgery. Early episodes also featured a singing and off-scene character named Captain Spaulding as a tribute.

In the second episode of The Muppet Show Kermit the Frog sings " Lydia the Tattooed Lady."

In the Airwolf episode "Condemned", four anti-virus formulae for a deadly plague were named after the four Marx Brothers.

In All in the Family, Rob Reiner often did imitations of Groucho, and Sally Struthers dressed as Harpo in one episode in which she (as Gloria Stivic) and Rob (as Mike Stivic) were going to a Marx Brothers film festival, with Reiner dressing as Groucho.

The "Sweathogs" of the ABC-TV series Welcome Back Kotter (John Travolta, Robert Hegyes, Lawrence Hilton-Jacobs, and Ron Palillo) patterned much of their on-camera banter in that series after the Marx Brothers. Series star Gabe Kaplan was reputedly a big Marx Brothers fan, and did many Groucho imitations on the show. Hegyes sometimes imitated both Chico and Harpo.

In an episode of The Mary Tyler Moore Show, Murray calls the new station owner at home late at night to complain when the song "Hooray for Captain Spaulding" is cut from a showing of Animal Crackers because of the new owner's policy to cut more and more from shows to sell more ad time, putting his job on the line.

In 1990 three puppets were made of Groucho, Harpo and Chico for the satirical TV show Spitting Image. They were later used to portray the hunters in a 1994 TV production of Peter and the Wolf, with Sting as narrator and puppets from the series as characters.
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