Question: Which actor from "Lost" is also in the film Another Earth?

Related documents: [0]  [DOC] William Reibert Mapother Jr. ( ; born April 17, 1965) is an American actor, best known for his role as Ethan Rom on the television series "Lost". [END] 
[1]  [DOC] Another Earth is a 2011 American independent science fiction-drama film directed by Mike Cahill. It stars Brit Marling, William Mapother, and Robin Lord Taylor. It premiered at the 27th Sundance Film Festival in January 2011, and was distributed by Fox Searchlight Pictures. [END]  
Answer: William Reibert Mapother Jr.
William Reibert Mapother Jr.