William Asher, who helmed and wrote pioneering TV series including I Love Lucy and Bewitched, died today in Florida at age 90. A Palm Springs Life feature dubbed him "the man who invented the sitcom" in 1999, eight years after his retirement. Take an awed scroll across his IMDb page — The Dukes of Hazzard! Gidget! A Twilight Zone episode! — and thank him next time you channel-surf right into some of his unforgettable work.