Memorial Day weekend is upon us, and for most that means beach, sun and water sports. For us, however, that means big summer movies are officially here. Whether accurate or not, Hollywood views box office totals from this weekend to predict how the summer will go like Punxsutawney, Penn., uses a groundhog's shadow to forecast winter's end.

This doesn't always hold up. Despite last year's Memorial Day box office haul being the lowest in 17 years, Hollywood still had one of its most profitable summers ever. The following five movies will tell you one thing about what type of movies do well over Memorial Day: huge action-adventure sequels.

Opening this weekend, 'The Hangover: Part II' and 'Kung Fu Panda 2,' have the "huge" and "sequel" parts down. But they'll be trying to break into the list as the only raunchy comedy and animated film in the top five. Can they do it? Read the breakdown and decide.
The Day After Tomorrow
PG-132004
Based on 38 critics

A climatologist tries to locate his son after global warming leads to worldwide natural disasters. Read More

X-Men: The Last Stand
PG-132006
Based on 38 critics

The discovery of a cure for mutations divides the followers of Charles Xavier and those of Magneto. Read More

Indiana Jones and the Kingdom of the Crystal Skull
PG-132008
Based on 40 critics

Indy (Harrison Ford) and a deadly Soviet agent vie for possession of a powerful artifact. Read More

Pirates of the Caribbean: At World's End: in Digital Projection
PG-132007
Based on 36 critics

Will, Elizabeth and Barbossa join forces to free Jack Sparrow from Davy Jones' locker. Read More

The Lost World: Jurassic Park
PG-131997
Based on 18 critics

Men (Jeff Goldblum, Julianne Moore, Pete Postlethwaite) confront dinosaurs on a Costa Rican island. Read More