Steven Spielberg's time-travel-with-dinosaurs show Terra Nova has been drawing plenty of comparisons to Avatar. But when the show revealed its first trailer to critics, the comparison on everyone's mind was television's former mega-hit, Lost.
The biggest superhero cliche is the origin-story. Watchmen flouts that convention, by starting in the middle, then provides the origin-story of an alternate world. We asked Zack Snyder and Dave Gibbons about world-building via superhero origins.