What is a ghost?  Do they exist or is it just a big fairy story?  I am sceptical about most alleged supernatural claims however I must confess to a few experiences over the years that have left me wavering.  

On several occasions I have found myself suddenly thinking rather intensely about people I haven't seen for a while.  A few hours later I discover they've died.  Coincidence?  Maybe, ESP, Telepathy or some other Psychic phenomenon possibly.  At the back of my Christian mind a little voice suggests that it might be the dead person's soul departing with a quick cheerio to friends and acquaintances.  Sounds like a load of bollocks when you write it down though.  Its easier to believe in ghosts.

Does anyone have an opinion on this.  Am I a deranged fantasist or do lots of people have similar experiences?