In which film is Maria von Trapp 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? Who played Maria von Trapp in 'The Sound of Music'? 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? Who played Danny Zuko in 'Grease'?