Season 8 begins with six Sharks in the tank. Included: Pittsburgh Steelers wide receiver Antonio Brown touts the benefits of personalized shoe slides; a high-school junior pitches an app that can stop cyberbullying messages; a New Jersey duo try to create a buzz for their at-home beer dispenser; and a Utah woman shares the heartwarming story behind her chicken soup business. Also: an update on an SAS prep course invested in by Mark Cuban.