I don't think that is a weird idea either.
In fact, I think I find this much easier to swallow than apparitions from 'thin air'. Or maybe it is just a matter of the energetic strength of the individual appearing.
When you strip everything down, we are all animated by the same brand of energy. It is eternal, and I believe finite. You die, and the energy that animated you, and made you YOU, returns to the universe and is redistributed (it's the original recycling plan!). If in certain cases bits of this energy is able to somehow remain and attempt to pull together in any semblance of it's original form, wouldn't it make sense that it would borrow juice from something still material?
This is off topic... but I am realizing that 'skeptical' isn't really an accurate descriptive for me. I just.... have a little philosophical contradiction I need to figure out
It would be helpful if we could prove string theory without blowing the world up too. heh.