The Chicago Tribune has come up with a list of the top 25 worst TV Shows of all time:
You're in the Picture (1961).
Petticoat Junction" (1963-'70).
My Mother the Car (1965-66).
Ernest Angley Hour (1973-present)
B.J. and the Bear (1979-81)
When Things Were Rotten (1975)
Mr. T. and Tina (1976)
The Ropers (1979-80)
Joanie Loves Chachi (1982-83)
Mama's Family (1983-90)
Mr. Belvedere (1985-90)
Small Wonder (1985-89)
Life With Lucy (1986)
Beauty and the Beast (1987-90)
Cop Rock (1990)
Pink Lady and Jeff (1980)
The 100 Lives of Black Jack Savage (1991)
The Jerry Springer Show (1991 to present)
Barney & Friends (1992-present)
Homeboys from Outer Space (1996-97)
The Diary of Desmond Pfeiffer (1998)
I wouldn't quibble with most of these (never heard of a couple of them), but I don't think you can say Petticoat Junction was one of the worst shows of all time. After all, it had that cute little Benjie dog and those adorable lasses swimming in the town water supply.
And hey, bashing Barney! How cynical can you get.