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The probably most important aspect is the availability of special effects technologies - including the budget of a production to use those. Some movies that will be shown are made at a time where digital editing was not yet existent, whereas other recent motion pictures (e.g. Star Wars Episode II) don’t even contain a single scene without computerized backgrounds or animations. Moreover the commercial success of the movie industry increased a lot during the past 10 years, such that higher budgets became more and more feasible.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.