Alan Alda (born Alphonso Joseph D'Abruzzo; January 28, 1936) is an American actor, director, screenwriter, and author. A six-time Emmy Award and Golden Globe Award winner, he is known for his starring roles as Captain Hawkeye Pierce in the TV series M*A*S*H and Arnold Vinick in The West Wing, and his supporting role in the 2004 film The Aviator as U.S. Senator Owen Brewster, for which he was nominated for an Academy Award. For 14 years, he served as the host of Scientific American Frontiers, a television show that explored cutting-edge advances in science and technology. He is currently a Visiting Professor at Stony Brook University and a founder and member of the advisory board of the university's Alan Alda Center for Communicating Science and the Future of Life Institute. He serves on the board of the World Science Festival and is a judge for Math-O-Vision. Alda is giving a free and rare lecture at Caltech's Beckman Auditorium on April 6, and he phoned in to talk about his lifelong passion for science, what made "MASH" work so timelessly and much more. Tune in to hear a living legend!