An osteopathic physician, or D.O., is a board-certified physician fully licensed to practice in every state and in more than 65 countries. An osteopathic physician, or D.O., is a board-certified physician fully licensed to practice in every state and in more than 65 countries.
In 2004, Carlin was placed second on the Comedy Central list of Top 10 Comedians of US Audiences compiled for an April 2004 special. The first of his 14 stand-up comedy specials for HBO was filmed in 1977. From the late 1980s, Carlin's routines focused on sociocultural criticism of American society. He often commented on contemporary political issues in the United States and satirized the excesses of American culture.
Starred in 14 HBO specials from 1977 until his death in 2008. He was the first-ever host of Saturday Night Live (1975) on 10/11/75, as well as the first-ever host of Fridays (1980), an ABC show fashioned after SNL. Inducted into the Comedy Hall of Fame in November 1994.