Ghost cat, maybe that's the kind of ghost I had when I was a teenager. For about a year I had the same thing, I could feel something jump on my bed and lay down, but when I looked there was nothing there. The funny part was that all of a sudden it just stopped happening to me, and when it did my sister started to have it happen to her! So we had a ghost just passing through, cuz after awhile it left her too.
I have a bunch of stories. This one always stands out in my memory. When my mom was a little girl in the Philippines, she had a nanny/maid who she was very close to. Years later, we're living in California, I was about 7 years old, and my mom got a call telling her her nanny had just died. I remember I was wide awake several nights in a row and I could hear my mom scrubbing the kitchen floor. So one morning, I asked her, "why do you keep scrubbing the floor in the middle of the night?" She asked, "someone is scrubbing the floor at night?" I said yes. Then she looked kind of happy and smiled and said it was her nanny coming to take care of us. I don't know if that counts as a ghost haunting, but I remember it fondly.