Scientific American and the Journal Nature have a great podcast#1 , podcast#2 regarding how you discuss science with folks that simply don't get it. It's a good, thoughtful, and funny discussion about working strategics like finding common ground, and being friendly. (and also knowing when it's just not worth it.)
"A panel discussion on arguing with non-skeptics at the recent Northeast Conference on Science and Skepticism in New York City featured James Randi, George Hrab, D. J. Grothe and podcast host Steve Mirsky. Julia Galef moderated." - Scientific American