I've always been a fan of mysteries, movie and book, spooky stories, ghosts, haunted houses. My grandkids insist that our house is haunted--and it may well be, since it's old. Doors do open and shut on their own--but if we're sharing the premises with other beings, they are not the least bit threatening.
Hubby and I have gone out of our way to stay in haunted hotels. We've stayed on the Queen Mary a couple of times and it definitely has a spooky aura. We also spent a weekend in the old hotel across the street from the Alamo in San Antonio. All night long someone was knocking on doors--and that someone wasn't visible.
One of our favorite Bed and Breakfast hotels in Ventura, the Bella Maggiore, has a haunted room. We stayed in it one night and didn't have a visitation. However, on a previous weekend, we definitely felt that eerie feeling when ghosts are about.
The Springville Inn where we live boasts of three ghosts. I don't think they visit any of the hotel guests but prefer to hang around the kitchen and back staircase.
Though I primarily write mysteries now, I always have some sort of Native American spiritual or mystic happenings in my Deputy Tempe Crabtree series. (Kindred Spirits, http://www.mundnia press. com/.) In the past, I wrote a book called Kachima Spirit which is all about a haunted house and several ghosts which is still available as an e-book and trade paperback from http://www.hardshell.com
With Halloween coming on, maybe some of the rest of you would like to share about any ghosts you've experienced.