<p>In selecting British playwright Harold Pinter for this year's Nobel Prize for Literature, the Swedish Academy did something unusual — and also something true to form. What's unusual is that an internationally known writer whose body of work truly merits the world's most prestigious award actually won. Plays like "The Caretaker" and "The Birthday" not only revolutionized 20th-centuty theater, they spawned an adjective: Pinteresque.</p>