I'm more of the persuasion that out of body experiences are just a kind of dream for the most part but I've had a few experiences that would qualify. I've had about three or four, most of them were pretty uneventful. I was mostly just walking around my house as a ghost walking through things. I was struck by the lack of angels, demons, spirits, etc. that mystics always describe seeing during these experiences. One was especially weird though. After leaving my body I somehow willed myself back in time to my freshman year of high school and possessed my body. I went on to talk to someone in the hall. (I was painfully shy back then, so that would have been a huge accomplishment.) Again, I have no reason to believe these are real experiences but I have friends who disagree.