Bradley Whitford was allowed to use his own Camaro for the movie. It has the license plate "SO COOL," the actual license plate Bradley had on his car.
The tow truck driver hits a lawn jockey after reaching his house. Knocking over lawn jockey's later became a running joke in Home Alone and Home Alone 2: Lost in New York also directed by Chris Columbus.
Anthony Rapp (Daryl) dyed his naturally blonde hair red for the movie. The producers were concerned his blonde hair would remind audiences too much of Anthony Michael Hall.
The two rival gangs on the El Train challenge each other to a fight when the train crosses "Devereux" street, an in-joke towards director Chris Columbus' wife Monica Devereux and father in law Clarke Devereux who both appear in the movie.