Who played Jay Gatsby in 'The Great Gatsby'?

In which film is P.T. Barnum a character? Who played Jean Valjean in 'Les Misérables'? Who played Fantine in 'Les Misérables'? Who played Satine in 'Moulin Rouge!'? In which film is Jay Gatsby a character? Who played Rick Dalton in 'Once Upon a Time in Hollywood'? Who played Cliff Booth in 'Once Upon a Time in Hollywood'? In which film is Cliff Booth a character?