You know, not to get this thread off track (10+ years later) but that Preston Nichol's book "The Music of Time" has some really strange stories about Mark Hamill and his brother.
"It was during this time period that one of my friends in the neighborhood band said his cousin would be very interested in my ESP research. This cousin turned out to be Mark Hamill who I was already familiar with as described earlier. At that time, Mark was a member of a recording group called the "Ohio Express." He volunteered for some of my experiments and we hit it off and became friends. He had a very deep interest in the occult, metaphysics, ESP and all types of psychic phenomena. Originally, he lived in Ohio and would visit his family on Long Island. When he did, we would get together and discuss all sorts of different subjects. I tried to develop his ESP. We pooled our information and sought out many different types of occultism.
Mark was extremely mystical. He consulted astrologers and was always looking for patterns in numbers and names. Mark was not only a metaphysician, he was a gifted and prolific lyricist. He was an extremely talented musician as well and eventually starred on Broadway as Mozart in Amadeus. One of the reasons he was chosen for the role was that his musicianship was flawless. He also had the petulant personality that fit the role of Mozart exactly. He could basically be himself. Although he was offered the role for the movie, he turned it down. Perhaps he did not realize what a big hit it would become or did not want to be typecast in the role. I do not really know what his reasons were, but I saw his performance at least two times and it was excellent.
Before I got to know Mark very well, I was already acquainted with his older brother Chuck, an even more gifted musician. Chuck had been hanging around the
studio for some time because he wanted to break into the music business. He had always demonstrated a great interest in electronics, audio systems and weird technology. Chuck was more of a technician than Mark and was down-to-earth. Sometimes he thought his brother was a complete idiot with his head in the clouds. I helped Chuck understand his brother, and I think I kept them in a decent brother relationship. There were times when he would have abandoned Mark had I not stepped in.
Chuck was also very interested in time travel and used to talk to me about it. He asked me if I knew anything about time travel technology or making a time machine. Whenever this subject came up,I could only joke about it. He took it quite seriously and said I would be the one making a time machine for the private sector in the future. When I asked him how he knew this, all he said was that "he had seen it." If I did not know him better at the time, I would have thought that he was just one of the kids in the neighborhood trying to wind up the "scientific nerd" (meaning me) in the community to see what he could get him going on. This was not the case however because he had tremendous respect for my technical abilities. After all, I was the one who made his recordings work.
Since those early years, I have also spoken to quite a few people who believe Chuck to be a time traveler. He was always interested in cutting-edge technology and eventually became very involved in the intelligence community. As I became involved with the Hamills, I began to record their music. I had access to Studio A and Chuck was already familiar with the studio set-up from hanging around. The first record I produced for them was "Beg, Borrow and Steal" which was released by Cameo in October 1967 under the name "Ohio Express." Even though this record made the charts, it did not bring us instant success."