10. Martin Freeman
Freeman will be busy with the Hobbit series over the next few years, but he should definitely try to get a part in one of the Star Wars movies afterwards. His inherent likability and everyman appeal would fit in well with the style of movies in which a JJ Abrams Star Wars will probably be made. Freeman first got famous for his work in British TV comedies, and his comedic abilities would be useful in a Star Wars movie. His role in Sherlock offered more evidence for his acting ability. Freeman would work best as one of the non-jedi on the hero's side, maybe as a pilot or some other member of the Rebel Alliance where he could put his everyman charm to best effect.