THE YIN YANG THANG

13. Oscar and Felix, "The Odd Couple"

This one's a gimme. They are TV's prototypical marriage of opposites. Oscar is the messy one, Felix is the neat freak, and they carry on the battle that still rages in households around the world. These dudes are classically codependent.

Pictured: Tony Randall as Felix Unger (left) and Jack Klugman as Oscar Madison.