My favorite TV script is for "Bart Gets an F," an early episode of "The Simpsons." This is a beautiful portrait of Bart--in the days before Homer became the series protagonist. It's also a meditation on the word "underachiever." Bart has been labeled a failure by various school authorities. But he shrugs. Many brilliant minds have struggled with conventional schooling: Edward St. Aubyn, Chris Rock, Jay-Z, and so on. (A Bart Simpson tee shirt popped up all over America. "Underachiever," and Proud of It! ....Some felt that Matt Groening should not glorify the idea of failure. Groening pointed out that "underachiever" was in quotation marks--because the people assigning the label to Bart were obviously wrong. But this reasoning was a bit too elaborate for certain American politicians--like Bush, Sr.--who tried to attack "The Simpsons.") Bart's F results from a book report. We open with Martin giving a stirring talk ab...