You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: KILL BILL: VOL. 1 
Clue: This former "Ziegfeld follies" humorist died in 1935 in an Alaskan plane crash
will rogers

Category: YOU, ME & DUE PROCESS 
Clue: In 1970 the Supreme Court held for the first time that due process required proof of guilt "beyond" this
reasonable doubt

Category: PHYSICS 
Clue: A football position, or the point in a pendulum's arc at which it reaches maximum velocity

the center