10 Famous Guest Stars on ‘Mork & Mindy,’ Which Ended 40 Years Ago

Mork & Mindy - Penny Marshall, Robin Williams, Henry Winkler
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Were it not for Mork & Mindy, the world might have never known the comedic genius of the late Robin Williams. The two-time Emmy winner became a household name on the 1978 ABC sitcom, a spinoff of Happy Days, as he played alien visitor Mork opposite Pam Dawber as his friend and love interest Mindy.

Over the show’s four-season run—which ended 40 years ago, on May 27, 1982—Williams and Dawber shared the screen with many more stars or stars-in-the-making. Find 10 of those familiar faces in the gallery below.

Georgia Engel
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Georgia Engel

This late Mary Tyler Moore Show actress guest-starred in two second-season episodes, playing Ambrosia Malspar, a meter maid who marries the eccentric Exidor (Richard Donner).

Morgan Fairchild
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Morgan Fairchild

The Falcon Crest alum recurred in Season 1 as Susan Taylor, a frenemy of Mindy’s from high school.

Corey Feldman
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Corey Feldman

This former teen star known for The Goonies, Stand by Me, and The Lost Boys guest-starred in Season 3 as Billy, a daycare-center kid with a Billy the Kid fixation.

Kim Fields
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Kim Fields

Just after she debuted on The Facts of Life, Fields played young tonsillectomy patient Pattie in the Mork & Mindy Season 2 episode “Mork’s Health Hints.”

John Larroquette
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John Larroquette

A few years before he argued before the Night Court, Larroquette appeared in Season 4’s “Alienation,” playing Utopian cult leader Baba Hope.

David Letterman
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David Letterman

The former Late Show host marked one of his first TV appearances on Mork & Mindy, playing scammy self-help guru Ellsworth in Season 1’s “Mork Goes Erk.”

Penny Marshall
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Penny Marshall

In the Mork & Mindy pilot, Mork tells Mindy about a disastrous date he once had with Laverne DeFazio, with this actress reprising her Happy Days and Laverne & Shirley character.

Paul Reubens
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Paul Reubens

This Pee-wee’s Playhouse comic guest-starred in Season 4’s “Long Before We Met,” playing Dickie Nimitz, a would-be suitor of Mindy’s from high school.

Raquel Welch
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Raquel Welch

This ’60s-era sex symbol, last seen on screen in UPtv’s Date My Dad, played Captain Nirvana of an enemy alien race known as the Necrotons, in two Season 2 episodes.

Henry Winkler
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Henry Winkler

Like the aforementioned Marshall, Winkler appeared in the Mork & Mindy pilot, where viewers learned that it was his Happy Days character, Arthur “The Fonz” Fonzarelli, who set Laverne up on her date with Mork.