With practice, you can do this on your own, without drugs. It's a form of very, very advanced meditation. I usually don't do it because it can be frightening, but it is a rather interesting experience for better or worse.

But I have had a drug-induced OBE, I had just eaten an 1/8 of shrooms and taken 3 ritalin... It was the most frightening experience of my life. I thought that I had died and been reincarnated for eons. That and I was listening to "Eons" by 311, so that probably didn't help too much.