Do you have a favorite guest star that appeared on the Bob Newhart Show?

Several, but the two that come to mind -

Emmaline Henry, who played Mrs. Walker, one of Bob's patients.

Henry Winkler, who gave Dr Hartley a VCR before they became very popular to own.

I loved Henry Winkler's guest spot as well. He was hilarious - especially talking about Kenny the Worm. :rofl: Jennifer Warren was priceless as the barracuda talk show host, Ruth Corley (she also played Lynn-Holly Johnson's skating coach in Ice Castles). Also, Shirley O'Hara was simply hysterical as the most incompetent secretary in history, Debbie Flett. :rofl:

I liked Tom Poston who played the old friend of Bob's.

^ All good choices! One of my favorites is Peter Brown who played Stan the tennis instructor.

I liked Tom Poston who played the old friend of Bob's.
The Peeper!! I loved the Peeper, and Tom Poston was letter perfect in the role. :cool: