At movie theaters this summer, it's going to be hard to tell which hero's flying through the air. Might be Superman. Might be one of the Fantastic Four. Might be Tom Cruise, especially if said hero's hanging off an airplane. Might be a Viking youngster and his dragon BFF. Or, heck, it might even be that furry rascal Stitch.

Summer begins early in Hollywood, on the first weekend in May and that kick-off can make or break a pivotal 123 day corridor that has historically accounted for around 40 percent of the annual box office.