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 simplicity, answers should be in all lower cased letters.

[Q]: Category: WHO PLAYED 'EM ON TV? 
Clue: Army company clerk Radar O'Reilly
[A]: gary burghoff


[Q]: Category: WHAT'S THE BIG IDEA? 
Clue: The 21st century doctrine named for this man allows the U.S. to wage preventive war if an attack on us is coming
[A]: george w. bush


[Q]: Category: AT THE "BAR" 
Clue: One of the best sellers in its field, its stock symbol is BKS
[A]:
barnes & noble