I can't post pics due to technical difficulties but IMO The Stuff video poster with the melted people coming out of the fridge beats the one sheet. I have one in my collection. The other one that comes to mind is the Day of the Dead video release with Bub up close. No pics sucks but you probably have seen these before....
I totally agree about the Stuff video poster. As far as the Day of the Dead goes, I think the one sheet stands on it's own. It's one of my favorite posters of all time. The video poster is also good, but if I had to choose one to go on my wall, it would be the one sheet.