Age 29

Mustworthiness Best known as the last remaining good guy in London in the 2003 zombie thriller 28 Days Later..., the Ireland native is coming to America this summer playing a pair of scoundrels. In Batman Begins he torments Gotham as the Scarecrow, and in Red Eye he torments Rachel McAdams as a scheming kidnapper.

On His Must List Music—The Books, Kings of Leon, Wilco, Rufus Wainwright. "The iPod has been an amazing development," he says, "especially on film sets. The little white plugs in the ears is a way of saying 'Do Not Disturb.'"

His Favourite Scarecrow Well, it's not the one you'd think. "My favorite film is Scarecrow, which is this 1973 movie with Al Pacino and Gene Hackman, at the height of their game. So whenever people ask me, 'what's your favorite movie' I go, 'Oh, Scarecrow.' They think I'm prophesizing the spin-off of Batman Begins or something!"