‘Iron Man 3’
Studio: Disney/Marvel
Worldwide gross: $1.2 billion
Budget: $200 million
The first film out of the gate this summer is also the year's biggest hit, and the first (and only) film of 2013 to cross $1 billion worldwide. The third entry in the Marvel franchise opened strong with $174 million and continued racking up the money in the U.S. and overseas all summer long.