Barack Obama's $3 Million 'Overhead Projector' Actually Pretty Cool

During the last Presidential debate, John McCain delivered this line about his opponent with withering contempt:
[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. » 10/09/08 5:20am 10/09/08 5:20am
I'm already tired of hearing…