Joe's best remembered Saturday morning
cartoon voiceover character: Babu.
One thing Joe thoroughly enjoyed was doing cartoon voiceover work. It introduced him to an entire new generation of fans. 

His most popular character, which was tailor made for him, was Babu, the apprentice genie, on Hanna-Barbera's Saturday morning animated series, Jeannie (1973). The series also gave Joe the opportunity to work opposite a young actor, Mark Hamill, who in just four years would be cast as Luke Skywalker in Star Wars

In all, Joe voiced more than 120 Saturday morning cartoon episodes from 1972-1979, from a fire-breathing dragon in an episode of The Alvin Show (1962) to The Houndcats (1972-73) to Scooby's All-Star Laff-A-Lympics/Scooby's All Stars (1977-79) as Babu to My Smurfy Valentine (1982) as Cupid and more.

(A complete listing of Joe's cartoon voiceover work may be found in his updated and enlarged autobiography, Once a Stooge, Always a Stooge, published by Moonwater Press).