I've got too many, lol.
Scariest thing to ever happen to my dad:
My dad was a kid when he got home from school one afternoon. He was alone in the house, doing his homework in his room, when he heard high heels clicking across the floor down the hallway right past his room. He called out thinking it was his sister, but when there was no reply he went to investigate. Just as he did he heard the bathroom door close at the end of the hallway, and when he went and grabbed the doorknob, it was icy cold. As in, burn your hand kind of cold. He ran out of the house and didn't go back in until my grandma got home from work that evening. He also threw a brick through the bathroom window at whatever was in there. Yep, bad temper regarding the supernatural run high in my family ^_^
Scariest thing to ever happen to my mum:
She woke up one night and saw someone standing in front of her dresser mirror. She was too out of it to ask questions and fell back asleep. The next morning she asked her sisters if any of them had been in her room, but none of them had gone into her room. Dun dun dun - creepy stuff.
Scariest thing to ever happen to my grandma:
Well...lots of things, but the scariest (for me) was a few years back when I went to visit her, and she was so upset and told us 'there was a boy in my room last night. He stood there with a bike at the foot of my bed and he had black eyes, and he just kept staring at me.' I shat myself. And never went near her room again either. There was also a story about her hearing a baby crying under a rock outside in her garden, when she was younger, and the man who appeared beneath the kitchen table and sent her screaming out of the kitchen... and the face that appeared right in front of her out of nowhere while she was doing the ironing one day.
Scariest thing to ever happen to my big brother:
Me finding out he had a crush on a girl I knew at school >_<
Scariest thing to ever happen to my little brother:
We moved a couple of years ago into a bigger house. I wasn't present at the time because I was visiting my BF six hours away for a month. When I came back from holiday and actually 'moved in' to my new room, I had nightmares every night. Like really bad ones that I can recall til this day in vivid detail. I told my family I couldn't sleep well in the house, and I didn't like being by myself because I could feel something watching me. They thought it was just my exaggerated imagination (stupid much? but anyway). My little brothers' room is right next to mine. So I moved out and relocated, and now my little brother complains about hearing someone in my room in the middle of the night, just about every night. He'd hear the bed creaking, or just generally ominous noises coming from my room. So he's scared that I wasn't making up stories when I said that place is haunted. I think I'm going to bet him to sleep in my room this Halloween. XD
Scariest thing to ever happen to a family friend:
Said family friend was also a work colleague of my dad's. They were working late one night out in the field rigging up lines or something (telecommunications experts) when the door opened and a guy walked into the building. To get in and get out you need a card, and the only people out in the middle of nowhere who had those access cards were him and my dad. They heard no 'beep' from the door mechanism. The guy who walked in had walked past right past them and right past a shelf. Or, rather as I understood it, he went behind the shelf and didn't come out the other side. Just disappeared into thin air. Scared the crap out of our friend, but my dad was all 'meh' about it.
Scariest thing to ever happen to my cousin:
He was taking a shower and an old woman suddenly appeared in there with him. He crapped himself.
Scariest thing to ever happen to me:
Getting attacked by a demon when I was at the lowest point of my life. It came at me screaming like a fudging banshee that was about to rip my head off. The worst of it all was that I felt it coming and when I was too late to react, I just kind of froze over. I couldn't move, couldn't breathe, couldn't do anything. I can't sleep without a light since that incident.