George Carlin, R.I.P.

Check out an unrecognizable, young George Carlin (at age 29!) on "The Tonight Show Starring Johnny Carson" in 1966.

Carlin, who anyone who's ever done radio has been impacted by (thanks to his notorious Filthy Words routine, which wound up serving as a guideline, thanks to F.C.C. v. Pacifica Foundation, of what not to say on the air), died Sunday in Santa Monica of heart failure. He was 71.