The Mumbly Cartoon Show (Hanna-Barbera, 1976)
Hanna-Barbera's Plan B becomes out Plan B!
Take a snickering shaggy dog blended with a mild mannered TV detective, add some cartoon villains who are over the top even by Saturday morning standards, and let them do battle for about seven minutes a week, and you get this Hanna-Barbera semi-classic! Before Mumbly joined the ambitious crossover Laff-a-Lympics, he made a name for himself amidst reruns of Tom & Jerry and Grape Ape cartoons. Pemmy and James are on the case of how well it holds up today!