In 'Citizen Kane', what is "Rosebud"?

In 'The Wizard of Oz', what does the Scarecrow want? In 'The Wizard of Oz', what does the Tin Man want? In 'The Wizard of Oz', what does the Cowardly Lion want? What is the name of the city Dorothy travels to in 'The Wizard of Oz'? In 'Home Alone', what is the name of the boy left behind? In 'A Christmas Story' (1983), what gift does Ralphie want? Which actor played George Bailey in 'It's a Wonderful Life'? In 'Elf' (2003), who plays Buddy the elf?