I've recently discovered the website, work, and existence of a very interesting woman. Her name sounded familiar to me so I may have read her work before, but Susan Blackmore is a freelance writer and lecturer who apparently writes about memes and other interesting stuff. With a degree in parapsychology (as well as psychology and physiology), she used to write about and investigate paranormal claims. In the article linked to below, she explains why she's given up on investigating the paranormal. I hope to look into her other work more when I get the time.
Why I Have Given Up, by Susan Blackmore
Update, January 10, 2007: Susan Blackmore was a featured guest on the December 15, 2006 edition of the webcast "Point of Inquiry" (link HERE).