Misc: What is the great mass of stone trees in the Painted Desert in Arizona called?

Questions

Which character sang 'Come Out, Come Out, Wherever You Are' in 'The Wizard of Oz'?

Which character sang, 'When you wish upon a star' in Disney's 'Pinocchio'?

Which comedy duo did the famous, 'Who's on first' routine?

Who co-starred with Julie Andrews in 'Mary Poppins'?

Who hosted the 1997 Grammy Awards?