The oven mitt that Pat McBeth uses to cover up the burn mark has the same tartan as the clan McBeth.
Writer/director Billy Morrissette got the idea for setting Macbeth at a restaurant while in high school. He was working at a Dairy Queen in South Windsor, Connecticut, and was "reading a lot of William Shakespeare at the time".
Detective MacDuff says at one point "I used to be a dancer". Christopher Walken indeed started out as an accomplished dancer.
The same Nova Scotia man happened to own the filming locations for the restaurant, McLeary's Garage, Mac & Pat's trailer, and the den of Mac & Pat's house. He also owned one of the many Camaros.
Among the 1970s trends, fads and inventions depicted in the film are: drive-thru restaurants, vegetarianism, Yahtzee, chicken bites with dipping sauces, tanning salons, the Magic 8 Ball, "MAD" Magazine (with the folding back-page pictures), fondue and streaking.
Billy Morrissette: the man walking his dog (and it's really his dog) in front of the McBeths' house after the McBeths open their restaurant.