Daffy Duck probably tops my list. I was never keen on Bugs Bunny - too much of a smug smart arse.
Pink Panther from the 1960s with the Inspector interval. I couldn't get on with Crazylegs Crane, Aardvark and so on.
Original Tom and Jerry, i.e. Fred Quimby productions, not Chuck Jones. It never gets dull.
Dangermouse was the best of British.
The makers of Charlie Brown had a crack at Fred Bassett in the 1970s with a Lionel Jeffries voice-over. I remember watching it at the time on BBC but it hasn't aged well.