Interesting BBC article on prayer...
BBC NEWS | Magazine | The new weapon in crimefighting... prayer
The thinkg I find most interesting is their scientific approach to studying the affect of prayer. They divided patents at a hospital into two groups. One group had Christians, Jews, Muslims and Buddhists praying for them, and the other did not. Unfortunately the recover rate was the same among each group.
It must have been caused by having the Jews, Buddhists and Muslims praying alongside the Christians.
Now, there would be a scientific experiment! Have each faith praying for something (let's say: fire come down from heaven) and then another group not praying at all (we could put all the athiests in that group).... Let's see what would happen.