I was studying in the Ugli (one of the libraries at the University of Michigan) when hundreds of protestors burst through the doors.  Realizing I was missing out on something really interesting, I biked back to my apartment at record speed, sprinted up the stairs, grabbed my camera, nearly ran someone over on the bike back to main campus, and caught the rally right in time.  For 2 weeks afterwards,  I carried my camera bag to my classes instead of my backpack.