Myriad sequels — including a third dose of Tony Stark — led Hollywood to its biggest box office sales ever. Citing new data from Rentrak, Bloomberg says North American movie theaters will beat last years $10.8 billion in revenue, but just barely. Marvels Iron Man 3 led the way, raking in $409 million in sales, followed by The Hunger Games sequel Catching Fire, which pulled in $393.5 million.