Alan Alda is an American actor, director, screenwriter, and author. He is best known for his role as Hawkeye Pierce in the TV series M*A*S*H, for which he won several Emmy Awards. He has also appeared in films such as The Aviator and Bridge of Spies. Alda is also known for his work in science communication, hosting the PBS series Scientific American Frontiers from 1993 to 2005.