Irish émigré Margaret Schroeder probably wins the prize for “most changed” on Boardwalk Empire: She started as a beaten wife and prohibitionist; became Nucky Thompson’s clever “kept woman”; and finally marries Nucky, sleeps with Owen, provides for her children—and follows her conscience. Unsurprisingly, her and Nucky’s marriage falls apart. MacDonald’s film debut was as Diane, the disaffected love interest to Ewan McGregor’s Renton in the disturbing Trainspotting. She’s also appeared in Finding Neverland, No Country for Old Men, and Harry Potter and the Deathly Hallows: Part 2.