Summer Movies Breakdown: Killer Comedies

The summer movie season is officially upon us, and all this week ET is breaking down the key ingredients of the big-money recipe for Hollywood's hottest movies, including comedy, action, sci-fi and horror movies, animated tales, and dramas based on a true story. Watch the video!

Pics: Hollywood's Hottest Movie Posters

From Sandra Bullock and Melissa McCarthy's comic chemistry in The Heat to Adam Sandler's Grown Ups 2, a stripping Jennifer Aniston in We're the Millers and the powerhouse reunion of Wedding Crashers stars Owen Wilson and Vince Vaughn in The Internship, which movie will laugh all the way to the box-office bank? We break down the basics...

Related: 'Fast & Furious' Smokes 'Hangover' at Box Office

For complete movie coverage, head over to ETonline's Summer Movie Guide for exclusive content, behind-the-scenes looks, fun-filled Speed Rounds, extensive photo galleries, trivia quizzes and much more.