>> at pepperdine university. we're proud of that. i did have an intuition i wanted somebody who had values like hers. she's a little bit brighter than i am, not that much. we've had a great marriage. three daughters and nine grand kids and we're looking for that kind of experience for people who come to us. >> thank you for your time. it's been a pleasure. >> up next, we are on the money. three billionairs you know changing the world one at a time. what still makes them giggle? later the sweet sounds of success, how some boomers are proving there's always a second chance when it comes to your career. >>> >>> warren buffet and bill and melinda gates were friends for years and became a driving force when buffet decided to donate a majority to the gates foundation in 2006. we asked the trio about the impact they've had. >> it's phenomenal we learned a lot of things and building up our capacity we got this capacity so things like agriculture and eradication over time. that's our life's work now. >> how would you say friendship and partne