Once. My dad is a weirdo like you wouldn't believe. Every house he's ever bought, he's made sure was rumored to be haunted. I've lived in houses people were murdered in. He loves the stuff. Anyway, once when I was a kid, I saw a hooded figure in my room as plain as I see another human being in the day. It scared the shit out of me.
While not 'seeing' in the other houses I've lived I've heard people talking, footsteps, and felt cold spots. He wanted to live in my dead grandmothers house, and we even stayed for a few days, and the room I slept in had this doll. I could not sleep willingly, I had to fall asleep from exhaustion.