William Patrick 'Liam Lynch' Niederst is an American film producer, musician and director well-known for his role in writing and directing music videos and short films for Tenacious D, including their 2006 motion-picture, The Pick of Destiny. Outside of Tenacious D, Lynch created the MTV show, Sifl and Olly, and has been releasing his own solo punk-rock albums since 1995. He has also produced music videos for Foo Fighters, Queens of the Stone Age and the Eagles of Death Metal.