This recent blog post from the New York Times spells out how some typefaces (particularly Comic Sans) make facts seem suspect while others (Baskerville is the winner of a small selection) inspire confidence. Baskerville isn’t my favorite — if you need a open-licensed version, see here — but it speaks well that every church should try to put its best (type)face forward when it wants to be seen as compelling and truthful.
Scott – I don’t know if you’ve seen this tongue-in-cheek response to those who disapprove of Comic Sans:
http://www.mcsweeneys.net/articles/im-comic-sans-asshole
It’s a fictional first-person response from the Comic Sans font … enjoy.