To take part in the celebration of the 50th anniversary of Scott Base (New Zealand) in Antarctica, Sir Edmund Hillary flew down on January 18th, 2007, for what is probably his last trip to the Antarctic Continent.
I hadn't realized he was even still alive until mcpenguin mentioned him being down there. The man has certainly had an interesting life!
He was the first person to ever stand on both poles as well as Mt. Everest. He is also the only living person pictured on New Zealand's currency.