Summer Movies Breakdown: Animated Fun!

All this week ET has been breaking down the key ingredients for Hollywood's hottest summer movies, from action, sci-fi and horror movies to comedies and dramas based on a true story. Now, we've got the season's biggest animated movies. See which big stars you'll be hearing on the big screen!

Pics: Hollywood's Hottest Movie Posters

Beyonce, Snoop Lion and Katy Perry are just a few of music's biggest stars lending their vocal talents to animated movies this summer (in Epic, Turbo and The Smurfs 2, respectively), Steve Carell is back in Despicable Me 2, and Billy Crystal and John Goodman return to animation with Monsters University, which comes out just a few weeks before Disney's Planes. Even our own Nancy O'Dell gets into the action this summer with a role in Smurfs 2. Watch the video to find out how...

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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.