Original Maverick my butt

John McCain's latest campaign ads are calling him "the original maverick." To those of us of a certain age, James Garner is the original Maverick. If I was going to compare McCain to a character in a sixties television show I would cast him as Grampa Amos (Walter Brennan) in The Real McCoys or Uncle Joe (Edgar Buchanan) in Petticoat Junction. What are your casting suggestions?