Oh yes...

Wondering about that "overhead projector" John McCain seemed oddly obsessed with at Tuesday's debate? In case you've forgotten (or, quite possibly more sensibly, didn't watch): At two different points during the debate McCain, seeking to paint Obama as just another tax-n-spend Democrat, used this example.

McCain: [Obama] voted for nearly a billion dollars in pork barrel earmark projects, including, by the way, $3 million for an overhead projector at a planetarium in Chicago, Illinois. My friends, do we need to spend that kind of money?

Well, that sounds outrageous, of course. Especially since I don't know about you, but to me "overhead projector" conjures images of the kind they used to use for science slidehows in high school. Well, funny story. Turns out (what were the odds?) there was a little more to it than that...