While a complete list of every guest star isn't easily accessible, here are some notable actors and actresses who appeared in the show:
Recurring Guests:
* Dick Van Dyke: Played a recurring character, a charming and slightly inept insurance salesman.
* Harvey Korman: Appeared as a frequent guest, often playing characters opposite Lily Tomlin.
* Paul Lynde: Was a regular guest, known for his sharp wit and comedic timing.
Other Notable Guest Stars:
* John Ritter: Appeared in a few episodes, early in his career.
* Carol Burnett: Made a guest appearance on the show.
* Dom DeLuise: Was a guest star in several episodes.
* The Smothers Brothers: Performed on the show.
It's worth noting that the show was known for its unique blend of sketches, musical numbers, and guest stars. Lily Tomlin played multiple characters, and the show's format allowed for a diverse range of talent to appear.