Larry (William Sanderson), Darryl (Tony Papenfuss) and Darryl (John Voldstad) were supposed to be one-time characters, but the studio audience's reaction to their introduction was so spontaneous the producers decided to make them regular characters..

It was Bob Newhart's idea to begin using film from season two onward in order to give the show a more realistic look.

The opening credits are outtakes of On Golden Pond (1981). If you look closely, you can see Henry Fonda and Katharine Hepburn in the car. William Lanteau, who was the recurring role of Chester in the series, was also in On Golden Pond (1981).

Vermont residents complained that the opening scenes are of New Hampshire, not Vermont.

Exterior scenes of the Stratford Inn were those of the Waybury Inn in Vermont.

Mary Frann (Joanna Loudon) visited several Vermont inns to do research and brought back the Pfaltzgraff dishes that are seen as props in the Stratford Inn.

The show was videotaped in the first season, but later episodes were filmed.

Jerry Van Dyke was the first choice to play George Utley, but his audition for the role was unsuccessful.

Darryl and Darryl were originally named Larry. They altered their given names to avoid confusion both at home and at obedience school.

At the end of each episode, the voice of the kitten meowing in the "MTM" logo is that of Bob Newhart.

During the show's entire eight year run, the name of the town or community where The Vermont Inn was located was never mentioned.

Larry always wears a quarter in his ear. William Sanderson also used this prop in Coal Miner's Daughter (1980).

Julia Duffy was pregnant during several episodes of the show and had to hide her condition by wearing baggy clothes and standing behind furniture.

Darryl (unclear whether it's one or both) doesn't talk because when he was seven years old, he sat on a porcupine and "he ain't talked since."

The role of Larry was written for Tracey Walter. He auditioned, but William Sanderson was eventually cast.

Over the course of the series, how long the Loudons had been married kept changing. In an early episode in 1982 they'd been married 16 years; in a 1984 show it was said to be 12 years; when the Loudons are going to renew their vows in 1986, it was said to be 15 years.

In a later-season episode, Chester, the town's absent-minded mayor barrels into the Stratford end shouting "Thomas Hill Bridge is out!" Thomas Hill played Jim Dixon, Chester's buffoonish friend.

The characters Larry, Darryl and Darryl, who often waxed philosophical, probably got their names from the main character of the book "The Razor's Edge", by W. Somerset Maugham, Larry Darrell, who traveled the world looking for the meaning of life.

Jane Milmore's debut as a writer.

Despite the dream revelation in the final episode, books by Dick Loudon and the characters of Larry, Darryl, and Darryl all appeared in various episodes of Coach (1989), also created by Barry Kemp.

It was revealed in the final episode that the entire series was a dream of Robert Hartley's (Bob Newhart's character from his previous series The Bob Newhart Show (1972).). NOTE: Newhart has said that this idea was "dreamed up" by his wife at the start of Season 6, when he was upset with CBS for constantly changing the show's time slot and talked about ending the show that season.

To keep the tabloid press from finding out the real surprise ending, Bob Newhart leaked a "false ending" story for the series, before the final episode was aired. In the "false ending", after being hit on the head by a flying golf ball, Dick Loudon would wake up in Heaven, where he would meet God, to be played by either George Burns or George C. Scott.

Bob Newhart often made slight references to The Bob Newhart Show (1972) throughout the run of the show. Most were veiled, mainly poking fun at the quirks of Dr. Robert Hartley. None of these references ever gave any clues to the series finale.