Want more Cheers & Jeers? Subscribe to TV Guide Magazine.
The intense, square-jawed character actor has popped in a few big-screen gigs, most notably his Oscar-nominated turn as a mental patient in Revolutionary Road. He brings a similarly mesmerizing zeal to his Empire role as Van Alden, a Fed determined to bring down crime boss Nucky Thompson (Steve Buscemi). Emmys, take note.
What do you think of Shannon on Boardwalk Empire?