Who played Joel Barish in 'Eternal Sunshine of the Spotless Mind'?

Who played Ryan Stone in 'Gravity'? In which film is Ryan Stone a character? Who played Louise Banks in 'Arrival'? In which film is Louise Banks a character? In which film is Joel Barish a character? Who played Clementine Kruczynski in 'Eternal Sunshine of the Spotless Mind'? In which film is Clementine Kruczynski a character? Who played Nina Sayers in 'Black Swan'?