Revealing mistake: When Harry trips on the fan string throwing feathers all over him, the fan sound is heard running but there's no air blowing at him as the feathers are falling around him undisturbed. A few shots later, we see the fan on and blowing feathers around the room which is what it should have been doing.
Trivia: There is a scene where Kevin is walking past a driveway just as Harry and Marv are driving down it, and they stop just in time to avoid hitting him. This was achieved by having Macaulay Culkin walk backwards, as the van was driven in reverse away from him; the film was then shown backwards. It's hard to tell - but if you look at the smoke from the exhaust, it's drifting toward the van rather than away from it.
Question: Maybe I missed it, but did the McAllisters even bother to call home? I don't remember them calling the house at all. Why wouldn't that be the first thing they do? Kevin seems to be pretty independent for his age. He might have not answered the door, but I'm sure he would have answered the phone.Carl Missouri