Johnny Carson, an icon of late-night U.S. television, has died at the age of 79.
Carson hosted "The Tonight Show" for a record 30 years. Millions of Americans tuned in each night before bed to enjoy Carson's quick wit, smooth interviewing style, and often hilarious opening monologue.
Topics of Carson's humor included current events, politicians, and Mr. Carson's own love life -- he was married four times.
His retirement in 1992 became a national event that drew some 50 million television viewers.
NBC, Mr. Carson's network throughout his "Tonight Show" run, says Mr. Carson died today on Sunday from complications of emphysema.