Anyway, sure enough, half an hour later I received a call letting me know that my grandfather had passed away around the time the door closed. It's stuck with me as the most weird coincidence that has ever happened to me. Of course, the old man had about 36 grandchildren...and I was never really anything special. Why would he contact me?
I think you have something there, that explains part of why so many people believe they can be contacted by the dead. The need to be confirmed as, indeed, having been something special to somebody.
[not sure if that's local dialect or borrowed paranormal usage.] Sure used to scare the hell out of me as a kid (and may explain where I developed my bizarre taste in sandwich spreads).