Max Baer Jr. Biography
The son of former heavyweight boxing champion Max Baer, Max Baer Jr. is a classic (except probably to him) example of Hollywood typecasting. Known around the world as "Jethro Bodine" in the smash TV series
The Beverly Hillbillies, Baer did not find work as an actor in Hollywood for three years after the Hillbillies went off the air. Baer finally had to put himself to work as an actor in his movie
Macon County Line, which he also wrote and produced with a friend. Although it didn't let him escape his Jethro character, he did earn more than $35 million dollars in box office and (later) rental receipts. This after an initial investment of just over $100,000. Not bad for a boy with a "sixth grade education!"
Trivia

Son of boxer Max Baer.

He tried to shed the public's "hillbilly" perception of him by starring as good-guy crime fighter Max Colepepper in the unsold pilot, "The Asphalt Cowboy," in the early 70s.

Uncle of Amy Lynn Baxter.

Auditioned for Jethro only after driving his roommate to the audition for the same part.

Took great issue with the unsympathetic portrayal of his father in the film Cinderella Man, particularly his bragging over killing someone in the ring. Baer said his father was actually haunted by the incident and often cried about it.

One of Elvis Presley's Hollywood buddies during the 1960s. The two were often involved in impromptu football games among Elvis' friends and entourage.

Won his role as Jethro without having to speak a word. Baer's audition consisted of chasing a bird around the set, and he made enough of gestures and facial expressions to impress the producers. He admitted later that he had never tried speaking in a hillbilly accent, and he used the time between his audition and the first day's filming to learn one thoroughly.
Source provided by imdb (Copyright) - The Internet Movie Database.