James Newell Osterberg, Jr. (born April 21, 1947), better known by his stage name Iggy Pop, is an American rock singer, songwriter, an occasional actor. Although he has had only limited commercial success, Iggy Pop is considered an innovator of punk rock, garage rock, and other related styles. He is sometimes referred to by the nicknames "the Godfather of Punk" and "the Rock Iguana", and is widely acknowledged as one of the most dynamic stage performers. Pop began calling himself Iggy after his first band in high school, The Iguanas. His direct influence extends to the present day: a Cadillac ad in rotation since February 2007 features his vocal performance on the song "Punkrocker", recorded in 2006 with the Swedish band Teddybears.