Me and a few friends have been doing some "ghost hunting" recently in dark places, but haven't encountered any ghosts yet. Supposedly, the river bed right next to my house is haunted. You're supposed to be able to hear musket fire. The Mexican-American war supposedly started in the same river bed (Rio Hondo River), so I guess the ghosts of the soldiers linger in that area.
Anyways, I'll let you know if I encounter ghosts.