Dr. Schlitz was a participant in Closer to Truth: 

Show 107, "What is Consciousness?"
Show 119, "Can ESP Affect Our Lives?"
Show 112, "Strange Physics of The Mind?"
Show 204, "Do Brains Make Minds?"
Show 212, "What is Parapsychology?" 

Marilyn Schlitz is Director of Research at the Institute of Noetic Sciences, a leading research and membership organization devoted to interdisciplinary and diverse studies of the mind. She is also a senior scientist at the Geraldine Brush Cancer Research Institute at the California Pacific Medical Center.  Trained as a Medical anthropologist, she has conducted some of the most important research in parapsychology to date.

You will find more about Dr. Schlitz on the IONS Web site at:
http://www.noetic.org/ions/about/marilyn.asp