Alan Alda is beloved for his long-running role as Hawkeye on the iconic show MASH, but when you learn what this thoughtful and curious man is up to at the age of 82, you'll understand and value him in a whole new light. Plus, "Back to the Future" actress Lea Thompson's new project is a true family affair. Then, meet the 74-year-old woman who is rewriting the triathlon record books, and it's a sport she didn't discover until her mid-40s.