I was at my ex-missues house once, middle of winter about mid day and the house was empty and windows shut, her and her mum were firm belivers in ghosts, but her step dad wasn't. infact her mum was just plain nuts, she reckoned she dreamt about 9/11 the night before, exactly the same as it happened.
Well anyway, i was sat at the computer and the missus was doing some uni work when we heard a door banging, about 4 or 5 times, i stoped and said what the fuck was that, the missus calmly said without even looking up from her work 'oh that'll be the ghost, she does stuff like that all the time!! and carryed on with her work!
Me being a total non beliver just shrugged it off and never though anything of it.
My nan and grandad once went on holiday when they were about 40, stopped in some crummy hotel room and my grandad woke up in the middle of the night and saw a figure walk past the end of the bed and through the wall. he never mentioned it to my nan until they got home to which she said 'why didn't you tell me?!' 'well what would you have done if i had' well we would have come straight home!' ' well thats why i dint tell you, i wanted to stay!!!'
the only other one which for me was the wierdest one, was when went on a battlefields tour in 6th form around belgium and france, we visited a mass grave where hundereds and hundereds of people had been buried. it was one of the hottest days i have ever known. this grave was surrouned by a square of big trees with a stone arch that you walked under to get inside. well as you walked through this arch the temperature suddenly changed, from scorching hot to freezing cold,even though you were still in the sun as the sun was right above.
as my ex's step dad said, it's not the dead you need to worry about, its the living.