Some real crackers from the christian discussion forums (aka CARM)
I think you need to register before you can view these, but it's worth it. Lots of fun to be had there.
This one is about how the earth gains weight every time someone is born:
http://www.christiandiscussionforums.org/v/showthread.php
and this one thinks the speed of light is irrelevant to the speed of sight:
http://www.christiandiscussionforums.org/v/showthread.php