While I personally find the concept of past life regression interesting, and I quite enjoy listening to the stories, I've yet to encounter a claimant who did not appear to have once read about the time/life of where they claimed to have once lived (though in many cases they didn't consciously remember it), or who weren't lead by their therapist.
Playing Cluedo with my mum while I was at Uni:
"You did WHAT? With WHO? WHERE???"