TED Talk by Benjamin Zander: Classical music with shining eyes.
Personally, I like classical music but whether you like it or not, it does not matter -- this is an amazing talk by a very gifted speaker. It is not only about music but about optimism, leadership and relationship.
From Wikipedia: "Benjamin Zander (born March 9, 1939, England) is an English-American conductor. He is the music director of the Boston Philharmonic Orchestra and a faculty member at the New England Conservatory. He is known for his interpretations of the works of Gustav Mahler and his "popular" pre-concert lectures."