My dad used to roll his eyelids back & chase me until I'd lock myself in the bathroom when I was 6 or 7. Also, my brother would scratch on the wall in the living room which was also my bedroom wall & make demon sounds when he's babysit me.
When I was a kid I used to dislike that Mac Moon guy from McDonalds.. just the way he moved and talked in the commercials had an eerie feel.. the happy meal toys of him looked weird too.
Also I remember having a nightmare involving the "rockin red puncher" squeezit drink character.. except he was like the same height as me and had punching gloves on.. and he was in my grandmas house guarding the hallway, and every time I would try to get by him he would just punch me and not let me pass.
I would also get nervous just being next to really tall buildings/roller coasters and looking straight up at them.. yeh weird I know.
A few years ago, I was lurking around for old nick bumps. Then I found some sort of old nickelodeon closedown bump (i think it's from europe?) All the weird stuff going on in the bump weirded me out a bit. Not giving a link, though.