Silent Library was an American television game show which aired on MTV and MuchMusic. The series is based on one of the segments in the popular Japanese variety show Downtown no Gaki no Tsukai ya Arahende!!. The show is also similar to the UK television program Fist of Zen.

The series was renewed for a 20-episode second season, which premiered on January 11, 2010 and featured celebrities such as Jim Jones, We The Kings, Ron Jeremy, Naked Cowboy, Asher Roth, Forever the Sickest Kids, Jessie James, Aubrey O'Day, Justin Bieber and Joey Cassata competing as contestants and appearing in punishment challenges.

The series' third season premiered on June 28, 2010. The bands Patent Pending, All Time Low, Stereo Skyline, Hey Monday, Anarbor, NeverShoutNever, Honor Society, New Boyz and Iyaz have appeared as contestants, as did members of the New York Giants NFL team and the cast of the MTV original series The Hard Times of R.J. Berger.

The fourth season premiered on March 28, 2011. The cast of Jersey Shore, The Ready Set, Judah Friedlander, Jimmy Fallon & The Roots, players from the New York Giants, 3OH!3, and Superstars from the WWE all competed as contestants.

MTV canceled the show on November 9, 2011.

Fist of Zen ist eine von MTV produzierte Reality-Show die auf Mutproben basiert. Fünf Freunde müssen dabei an öffentlichen Orten (wie einer Bücherei, einer Kirche, einem Altenheim oder einem Museum) etwa neun Aufgaben sowie eine finale Prüfung bestehen, um dem sogenannten Zenmeister zu beweisen, dass sie seiner würdig sind. Dabei werden sie von Passanten beobachtet.