I was born in '84, so I too share your deep love for all things Ghostbusters. It's pretty strange to go back and watch those same movies now, realizing that many of the jokes were way over my head at the time. Strange, but good all the same.
That said, this game is a day one purchase for me. I believe co-op and multiplayer were confirmed for the Wii iteration of this game, but has anything been definitely settled for the 360 and PS3 versions? I'm all for as much co-op as possible for a title like this, but I don't know that it has been confirmed at this point.
It's really about time someone made a decent Ghostbusters game, though. Not that I didn't love the sheer simplicity of the NES outing, but it never really satisfied my need to kick some paranormal ass. If this game winds up being as good as every preview has made it out to be, that will be a happy day indeed.