More than once. In conversation with other family members, a few of us are conduits to the spirit world. To me this is disturbing only in the sense of lost sleep. My encounters generally occur while coming out of a sleep, only to find an image standing at the foot or side of my bed.
Dark shadows? sure... But know that I have an understanding of them, they are but a curiosity to me.
My wife thought me to be a bid mad;until she too witnessed the same apparition.
As the kids like to say..." no worries, it's all good."