When Casey Neistat was a teenager, the odds were against him; he had dropped out of high school, was washing dishes to pay rent, and was a father by age 17. But he eventually scraped together enough money to buy a camera and an iMac, and began churning out short films that went viral even before YouTube took off. Despite having to start his career over several times – Casey Neistat became a brand name in social media and advertising, and is now one of the biggest names on YouTube, with an audience of nearly 12 million. PLUS in our post-script "How You Built That," Pat Erley explains how struggling with a perpetually stopped-up sink inspired him to design Dripsie, a no-clog sink strainer.