Lord of the Rings: From whom did Bilbo obtain The Ring?

Questions

What was the nickname for Henry Coopers left hook?

Who wrote The Monkees hit I'm a Believer?

What is the rarest of the naturally occuring elements,estimated to be only half a gram of it in the earths crust?

What is the real name of The aint in Leslie Charteris' books?

What recent film was advertised with the catchline "Dead in the heart of Texas?