Elle Fanning and The Decisive Moment

Love sometimes announces itself with a bolt of lightning or a thunderclap. Most often it doesn't announce itself at all, just sneaks up on you with cat's feet and a nervous giggle. So it is when a star is born. Like that decisive moment in JJ Abrams' "Super 8," when Elle Fanning's character acts a serious scene for the movie-within-the-movie, then turns on a dime, giggling anxiously, to ask the director if her performance is OK.