I'm with this new Poster they call galleywest. I've been using double spaces after periods, question marks, exclamation points and colons since 1974, when I took a typing class in Junior High. I heard about the trend toward using one space from my Brother, who was apparently taught this at Zoo Mass (and who is always desperate to latch onto anything "official"), but one space looks stupid to me. Sentences need more space than words. 
