Not every movie opening this summer was based on a comic book or a graphic novel, but it may seem that way. The summer season opens on May 2 with the release of Marvel's "Iron Man" and the good times may continue until "Punisher: War Zone" opens in September. In between, viewers will get potential new franchise pics like "Wanted" and sequels featuring the Hulk, Batman and Hellboy.


We've taken a look at the box office for some of the most and least successful picture book adaptations of recent years -- from "Spider-Man 3" to "Persepolis" -- to see what this summer's crop has to live up to.