So I have only seen this guy a few times that I can definitely remember. The first one was when I was a little child, maybe only one or two. I remember waking up in the night for some reason and looking toward the door of my room, which was open, and seeing this figure silently coming towards me. From what I saw, I can describe it as a black smoke in the shape of a man with what I think is a fedora hat, a big, heavy coat, and a gun (like, a tommy gun?) in his hand. He came over and just looked down at me in my crib. We would stare at each other, then I'd either fall back asleep or he'd walk away to join the other shadows on the wall (this happened a few times).
Another time I saw him was when I was eleven or so. I was walking toward my room, when, out of the corner of my eye, I see the shadow man in the bathroom (which is right next to my room) near the towel rack. It only happened for a second, but it was long enough for me to recognize him. Now, whenever I take a shower I feel someone watching me, which is really creepy.
Yet another was actually when I had another ghost experience. It's that shadow I briefly talk about in "Girl in the Mist".
The most recent time I saw him was when I was walking through the hallway near the front door. Okay, so we have a big mirror right in that hallway. Anyways, I was walking, when I glanced in the mirror and saw his shadow on the wall, walking away from me. He went off the mirror and wasn't there when I checked.
So, yeah. Comment and I'll hopefully have more to post in the future!