In celebration of YouTube’s Fifth Year of Existence, one of my favorites. In 2006, the “Big Dig” project was over budget, past the deadline, and even when completed had more than a few hiccups. Christy Mihos, an entrepreneur from Brockton, was trying to get greater accountability for the project. In the greatest political ad ever – a cartoon, for goodness sake! – Mihos tried to understand why things were the way they were.