Oscar Completism: Best & Worst of Supporting Actor

by Baby Clyde
Walter Brennan in "The Westerner". The last of his three wins was the most deserving.
After spending most of my life cataloguing all these Oscar winning performances, I feel uniquely qualified to bore you all with my rankings. We’ll cover my favourite winners before handing out some booby prizes to the all-time worst recipients in each acting category.
Let’s start with the category that nobody cares about, Best Supporting Actor...