According to the specific version of the Amidah prayer that the rabbi says, it is possible to derive that he left the Amish village on a Thursday.

The opening credits are still being shown at the sixteen-minute mark.

Not the first western for Harrison Ford. He appeared in westerns when he was unknown in television, and in such films as Journey to Shiloh (1968) and A Time for Killing (1967). However, this movie would be Ford's last western until Cowboys & Aliens (2011).

In his autobiography, Gene Wilder says that John Wayne was offered the part that was eventually played by Harrison Ford. Wayne loved the role and was eager to work with Wilder. However, an agent tried to offer Wayne less than his usual fee and the legendary actor turned the film down. This may be true, but it is actually unlikely. By 1979, Wayne was too ill with stomach cancer to consider film work, and he died later that year from the disease.

Noticeable in the trailer for this Warner Brothers film was the use of footage of Gene Wilder from his earlier films, such as Warner Brothers' Blazing Saddles (1974) but also from his films for 20th Century Fox, Silver Streak (1976) and Young Frankenstein (1974).

This movie traded on Gene Wilder's western-comedy screen persona from Blazing Saddles (1974).

Final film of veteran character actor Henry Rowland.

This movie wasn't the first time the title "The Frisco Kid" was used. There was another western, Frisco Kid (1935), but this film was not a remake of that one.

One of five movies in which Gene Wilder played a man wrongly accused of committing a crime. The others being Silver Streak (1976), Stir Crazy (1980), Hanky Panky (1982), and See No Evil, Hear No Evil (1989).

Some viewers have complained that the name Darryl is anachronistic. One etymology source says that, as a first name, it was not used by English speakers until the late nineteenth century. However, the name comes from Old French "d'Airelle", meaning someone from the town of Airelle in France. Airelle itself means "open space", from the Latin, so it might be quite old.

Sixth and final western directed by Robert Aldrich. His earlier ones were Apache (1954), Vera Cruz (1954), 4 for Texas (1963), Ulzana's Raid (1972), and The Last Sunset (1961).

Harrison Ford does not appear until the twenty-two-minute mark.

One of numerous Hollywood westerns that were a flop at the box-office during the late 1970s and early 1980s. Others included Barbarosa (1982), The Mountain Men (1980), The Villain (1979), Goin' South (1978), Hard Country (1981), The Frisco Kid (1979), Cattle Annie and Little Britches (1981), and The Legend of the Lone Ranger (1981).

Penultimate film directed by Robert Aldrich. ...All the Marbles (1981) was his last.

One of two western comedies released in 1979. The other was The Villain (1979).

When the rabbi asks "Why is this Sabbath different from other Sabbaths?" he is referencing the ritual of the Passover Seder, when the youngest child asks, "Why is this day different from other days?"

The Frisco Kid (which stars Harrison Ford) has a scene in which an Orthodox Jewish man mistakenly assumes that Amish men are fellow Orthodox Jews. In Witness (also starring Harrison Ford), an Amish boy assumes that an Orthodox Jewish man is a fellow Amish man.

1979 marketing for the film heavily emphasizes Gene Wilder's role in the film, with little marketing of Harrison Ford's supporting role, despite Ford having been in the blockbuster Star Wars two years earlier. When The Frisco Kid was released on DVD, the cover was a blow up of Ford's face, with Wilder relegated to a small corner of the cover.

Gene Wilder sports a beard in this movie.

Shown as transporting the main character to America is the Tall Ship, Bounty, a 1960 recreation of a 1787 ship.