In 1961, Millhollin also appeared in two
sitcoms: as Osborne in "Pity the Poor Working Girl" on ABC's sitcom
Margie and as Harold in two episodes, "Mr. Big Shot" and "The Wedding", of
CBS's
The Ann Sothern Show. Millhollin was cast as Dr. Heydon in the 1961 episode "Dennis Is a Genius" and as a burglar in "The Uninvited Guest" (1963) on the CBS sitcom
Dennis the Menace, starring
Jay North in the title role. Near the end of 1961, he guest-starred as Mr. Pinkham in "The Dead End Man," in the series finale of
The Investigators. He portrayed a despicable bookkeeper/murderer, Ben Otis, in "The Case of the Angry Dead Man" on
Perry Mason. From 1961 to 1962, he guest-starred in different roles on four episodes of CBS's
The Many Loves of Dobie Gillis, starring
Dwayne Hickman. That year, he played a librarian in the film
Bon Voyage!. In 1962, he was cast as Lt. Bronner in the episode "The Handmade Private" of the CBS anthology series
GE True, hosted by
Jack Webb. In 1963, he co-starred as temp-agency boss Anson Foster, opposite Imogene Coca, in the series
Grindl. Between 1960 and 1963, he appeared in three episodes of the
anthology television series The Twilight Zone (
The After Hours,
Mr. Dingle, the Strong, and
I Dream of Genie). In 1964 he portrayed a sourpuss in the campy movie
Get Yourself a College Girl. In 1965, he appeared on the
George Burns sitcom
Wendy and Me in the episode "A Bouquet for Mr. Bundy"; he also appeared in
Green Acres, season 1, episode 14 (entitled 'What happened in Scranton") playing a hair stylist. In 1966, Millhollin appeared as an airline ticket seller in the
Get Smart episode "The Amazing Harry Hoo". Also in 1966, he portrayed a bank official in the film
The Ghost and Mr. Chicken and a department store manager in the Christmas episode of
The Beverly Hillbillies. In 1966 and 1967, he played a hotel clerk and a store official in three episodes of the
Marlo Thomas sitcom
That Girl. In 1968, Millhollin performed as Willoughby the Llama in the
Lost In Space episode "The Great Vegetable Rebellion"; and the next year he played Horace Burkhart in "The Con Man", an episode of the CBS series
The Doris Day Show. He also appeared in the TV series
Batman as Alfred Slye, a criminal lawyer for Harry, the evil twin brother to Chandell, portrayed by
Liberace. He also appeared in the pilot of
The Brady Bunch as Mr. Pringle. He also appeared as Humus the funeral director for Felix's bird Albert in a 1970 episode of
The Odd Couple. ==Death==