Foolin' Around (1980) and Somewhere in Time (1980) were the first theatrical feature films of actor William H. Macy where he was billed in both as "W.H. Macy". Somewhere in Time (1980) released first stateside in early October 1980 prior to Foolin' Around (1980) premiering in the USA about a fortnight later mid October 1980.
The real life name of the large Minnesotan manor house featured in the film is "Southways" and has also been known as the Pillsbury Mansion.
Sarah Pillsbury, who was the grand-daughter of the matriarch Mrs. Pillsbury, who resided in the 'Southways' Pillsbury mansion, which was featured in the movie, was able to work on the production, assisting the instructing the film's cast and crew how to move and handle the expensive antiques and artworks at the premises, earning herself an "assistant to the producer" credit.
According to the 19th September 1978 edition of show-business trade paper 'The Hollywood Reporter', this picture was the first ever major theatrical feature film to shoot its entire movie screenplay in the state of Minnesota in the USA.
Gary Busey said in his memoir that, relying on his agent's advice, he turned down the lead in 'Urban Cowboy' (1980) to do this movie. He he said in his book that he immediately regretted this decision.