Who played Maria von Trapp in 'The Sound of Music'?

In which film is Ilsa Lund a character? Who played Norma Desmond in 'Sunset Boulevard'? In which film is Norma Desmond a character? In which film is Norman Bates a character? In which film is Maria von Trapp a character? Who played Randle McMurphy in 'One Flew Over the Cuckoo's Nest'? Who played Colonel Nathan Jessup in 'A Few Good Men'? In which film is Colonel Nathan Jessup a character?