Misc: What is the only head bone that a normal human can move?

Questions

What does Spam stand for?

Which boxer starred as prizefighter John Gully in the 1975 film Royal Flash?

Which bird,one of the commonest in the world in 1814,became extinct a century later?

In which continent is Mt Erebus?

Which Yuppie banker did Rodney marry in Only Fools and Horses?