With knowing nods to "The Wizard of Oz" and "Honey, I Shrunk the Kids," this wondrous blend of live action and stunning computer-animation is a blast. To save the family farm, a youngster (Freddie Highmore) shrinks in size to enter a magical world of wood sprites and search for treasure. Mia Farrow. Directed by Luc Besson, who co-wrote the script, which was based on two of his own Arthur best sellers. Among the voice talent are Madonna, Robert De Niro, Jimmy Fallon, David Bowie and Snoop Dogg.