Since I read an article on the God gene, in other words, the concept that there is gene in humans that predisposes them towards religious belief, I have been more tolerant and understanding of theists. After all, they can't all be idiots can they?
Today I found an interesting scientific article about how electrical stimulation of the brain can cause a religious experience. Here is the link
http://community.livejournal.com/neurotheology/