6. Andy and Barney, "The Andy Griffith Show"
They're like an old married couple, these two. Andy (right) is the patient, calm, and knowing one; Barney (left) is kooky, hysterical, and inept. Together all day long, they keep Mayberry stable but not dull, the classic straight man and his foil. They're work partners, but they're family, too.
Pictured from left: Don Knotts as Deputy Barney Fife, Ron Howard as Opie Taylor, and Andy Griffith as Sheriff Andy Taylor.