Perhaps cementing Guess Who's and Herbie: Fully Loaded's placement on AFI's next great-movies list, Ashton Kutcher, 27, and Lindsay Lohan, 19, have copped the Nos. 1 and 2 spots in Teen People's list of power-wielding young Hollywood stars. Filling out the top five are Orlando Bloom, 28, Hilary Duff, 17 (stop giggling, Lindsay!), and Reese Witherspoon, 29 (hey, who let the old lady on here?).