I think you should check out The Path Series to glean some ideas for your film. I think Tom Campbell has an interview in it where he describes the initial experience of passing over...not that his is the only one but even though he has a lot of physics involved in his metaphysics he describes the process much like Bruce Moen might if asked the same question. It's still way out there for most folks, but it is very reassuring when you get there I'd say.

Of course everyone has seen Ghost 

The only thing is I am not sure if I should be able to really move things. I am not convinced that the dead can have any physical effect on the world.

My primary reason for thinking this is that if spirits really could do physical things and if you add up all the dead people that potentially exist the world would be chaos.

Greetings,

Fortunately you won't need a cast of ghosts large enough to create chaos, since most spirits cross over directly. Unless you make that a premise of your film--that lots of ghosts would create chaos!

Much success!
Bets

course you could just die...or end up in some belief territory like a Christian hell...or is that heaven...I keep getting those two mixed up. Or a retrieval perhaps..upon yourself. Not really dead this time, but only remembering that you did die, that time, and then gone back to help yourself. I've died so many times and in so many differant ways, its hard to deside what might be the best one that could be shown or represented in a movie. Which death do you remember the most? ( did you see it?)