Things I or you have noticed in the background??

This is one of my all time fav movies ever since I was a kid and watched this in 1990 at aged 8. I have watched this countless times since and have just bought and watched this on dvd so I can watch this on the big screen. I still have it on videotape and I have just heard that it will be out on blu-ray in July so I may have to buy a blu-ray player just for that film.

But anyway I have watched this so many times over 50, sad I know but has anyone only just or has recently noticed things in the background. I only just noticed the other day when watching....

1. the scene early on when Art is eating breakfast at the petersons and he grabs some food out of a bowl from Carol without her noticing and he clearly doesnt like what he tastes ... seconds later in the background we see carol with the bowl lay it on the floor for vince the dog.

Also I heard that apparantly Mark Rumsfield was packing a knife when he went to the Klopeks house ... lol ... I never even noticed or saw that.

I'm sure I will notice other stuff later but what have you noticed??? I'm curious.