Ooh! Found an online video of Neal Stephenson discussing The Fork: Science Fiction versus Mundane Culture, which was part of the Science Fiction as a Literary Genre symposium I went to in May. (You might just spot the back of my head in the video.)
It's a fascinating - and funny - discussion of the way sf and geekery had inviegled itself into the rest of the world. I'd quote worthy chunks of it here but there isn't a transcript and I'm blogging this during my lunchbreak. So just watch the damn thing.
(I did mention it before in my review of Indiana Jones and the Nineteen-Fifties.)
The symposium, incidentally, was at the Royal College of Surgeons, downstairs from the cool museum of dead things in jars. I was a bit disappointed we didn't all lie down, drinking kylixes of wine with rude pictures at the bottom. These academics don't know their history.