I just had two Jehovah's Witnesses call at the door. Very nice too, they were. Unfortunately they didn't seem to have a grounding in theology, thinking that Buddhism was a branch of Islam! Still, it's nice to see low level evangelism at work. I'm not of the opinion that you should be of one faith or the other, but having some faith is important, even if it's homebrew. Within a few minutes they left by themselves, after I acknowledged that the Bible has a great deal of valuable lessons but I simply found it a little 'mythological'.