MythBusters - Breaking Glass With Human Voice

"Mythbusters takes myths, tall tales and urban legends and gives them the scientific treatment to determine their validity. Myths are proved true, probable, possible, improbable or busted. Often after the real-world practical tests have proved or debunked a Myth, the team will take the experiment to the extreme, many times using more modern technology than the myth could have used or upping the black powder for impressive explosions." -imdb.com

official site: dsc.discovery.com