It takes real acting chops to make a sitcom character an overbearing, snobby, neurotic yet much loved anti-hero. John Cleese did it in Fawlty Towers. Hancock did it, Warren Mitchell (Alf Garnett) did it, Chris Barrie (Gordon Brittas) did it and Patricia Routledge absolutely nailed it in Keeping up Appearances (1990-1995, BBC).
The Bucket Woman. Legend.