The series
- Cast the Expert: In one episode of the series, a singer stays at the cottage. He's played by Harry Nilsson.
- Channel Hop: The series moved from NBC to ABC.
- Star-Making Role: The show helped Charles Nelson Reilly graduate from struggling off-Broadway actor and one episode bit player, to pop culture icon of the 70s.
The Film
- California Doubling: Despite taking place on the English coast, the film is almost entirely filmed in Rancho Palos Verdes, California.
- Creator's Favorite Episode: This was Bernard Herrmann's favorite of the scores he wrote.
- The Other Darrin: George Sanders replaced Richard Ney in the role of Miles Fairley after a couple of days of shooting.
- What Could Have Been:
- Originally, this was going to be a vehicle for Spencer Tracy and Katharine Hepburn, but Tracy dropped out, after which Hepburn did as well.
- Claudette Colbert, Olivia de Havilland, and Norma Shearer were considered for Mrs. Muir.
