I watched a cool, but cheesy movie yesterday about medical students who were purposefully inducing death on one another and then bringing each other back, in order to experience the NDE's that many people report experiencing when they die in hospitals before being revived. It was interesting, but not very realistic.
As for myself, I have never had a NDE, but I've had a few out of body experiences which are sort of similar. The first one happened when I was about 16/17 years old and got my extremely interested in astral projecting and lucid dreaming. I spent months listening to special tapes in bed that are designed to help you concentrate on putting your body to sleep, yet keeping your mind awake, essentially splitting your consciousness and allowing you to "roll out" of your body. I was never able to do it intentionally though, the few bizarre experiences I have had have all been completely random and uncontrollable.