In an opening scene of "Napoleon Dynamite," a 2004 film highlighting teenage perils and triumphs in a middle-of-nowhere Idaho town, the title character, a tall, gawky ostrich of a kid, disconsolately boards a school bus. He slumps into a seat, all nerd. "What are you going to do today, Napoleon?" a kid nearby pipes up. Napoleon, refusing eye contact, replies in utter disgust. "Whatever I feel...