The McDonald's that Kevin is seen visiting in Sewickley was an empty storefront. The small town of Sewickley, in which most of this movie was filmed, does not have a McDonald's, so they built a complete functional one that was open for business during the shoot and then closed and dismantled.
This was Sinbad's first leading role in a movie.
Second of three films that Phil Hartman and Sinbad appeared in together. The first one was Coneheads (1993) and the last was Jingle All the Way (1996). However, they only share screen time in this film.
Sinbad was on a diet during filming. The meat patties on the Big Mac were actually turkey burgers.