San Jose’s Ariel Hsing is a 16 year old who has qualified for the U.S. Olympic team, who was challenged to a table tennis match against billionaires Warren Buffett and Bill Gates during the Berkshire Hathaway annual shareholders meeting in Omaha, Neb., on May 6.  Shareholders and media gathered to watch the match as Buffett put on a good show to reassure shareholders that he’s feeling solid after his recent prostate cancer diagnosis Sunday, and that Berkshire Hathaway is ready to replace the revered 81-year-old investor when and if the need arises.  The big paddle that Warren and Bill eventually brought out was a great touch, even though it didn’t help the final tally.