I signed up for a free 3-day trial of xm radio for the "oprah and friends" channel and she's had a fascinating series on the soul. She interviewed Yale educated Miami psychiatrist Dr. Brian Weiss, author of Many Lives, Many Masters about his study on past lives.
It was incredible. Gave me chills. You can't read the interview here, but you can get a bit more on the case, Catherine, that started him on this here http://www2.oprah.com/xm/oprah/oprah_main.jhtml
It can't say enough how fascinating it was. He was treating a woman from China, who knew no english, had a translator even. Under hypnosis she started speaking as someone from the pacific NW, with perfect english. The translator was so stunned he started translating her responded back into Chinese.