The Chelyabinsk meteor was absolutely crazy. When the story first broke I thought it was some ridiculous "viral" marketing crap, which says a lot about our wonderful society. It's also a pretty incredible coincidence, happening at a time so close to the asteroid pass.
Also, it's been mentioned...but what is up with the Russians in the videos? Most of them just keep on doing whatever they were doing, like, "Meh, meteor explosion and huge shockwave. No biggie." In a few of them, the secondary shockwaves from the smaller pieces (?) sounded like gunfire. Huge explosion-like sound, gunfire-like sounds. I'd probably run for the hills first and ask questions later.