The farmhouse used in the film was located in Westminster, Maryland and was torn down a few years after the movie.
When Brad enters the store looking for a phone, he says "I come in peace." This was one of the catchphrases used by Tim Allen's character Buzz Lightyear in Toy Story (1995).
The Amish location of the movie is set in Intercourse, Pennsylvania, (population: 1,274 as of 2010 census) an unincorporated village and census-designated place in Leacock Township, Lancaster County in the U.S. state of Pennsylvania, 10 miles east of Lancaster on Pennsylvania Route 340. Intercourse is a popular site for tourists because of its location in "Amish country" and its sexually suggestive name.
At one point Tim Allen responds to a status report of life in the area by Kirstie Alley by calling her "Mr. Spock". While she never played Mr. Spock, she did play a Vulcan. She was Lt. Saavik in Star Trek II: The Wrath of Khan (1982)
Tim Allen and Megan Cavanaugh, who plays his "cousin," were on several episodes of Home Improvement. He played Tim Taylor and she played Trudy, who ended up marrying his co-worker Al Borland.