My 2 favourite people are James Burke and Carl Sagan.
JB is a science historian, and that's the end clip of his series 'The Day The Universe Changed' on the nature of scientific knowledge. It's talking about how eventhough Buddhism is a stagnant inward looking ideology, that it still provides a complete worldview for adherents.
It's funny because you watch some of his older series (before the internet existed) and he's already hinting about future advances and things to come. Many of his views have been adopted into the mainstream during recent years.http://www.youtube.com/user/JamesBurkeWeb
Take a gander at Connections, his most famous series