This is something I stumbled across some time ago (that is, it was linked to on an Ex-Christian forum I frequent

).
This is a beautifully made youtube series about someone who grew up as a very religious Christian.
He goes on to explain in great detail how his beliefs and thoughts were completely changed,
and how he eventually had to conclude that there was no God.
Since I liked it, I suspect many of you will as well.
http://www.youtube.com/watch?v=JOmSYHzeoNA