Brad Pitt surprises fans at King of Prussia

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At a special screening of his new movie World War Z, actor Brad Pitt surprised fans in King of Prussia.

The screening took place Thursday afternoon at the United Artist King Of Prussia Stadium 16.

Pitt opened up his introduction by saying the Philly Cheesesteak "really is the perfect sandwich.

He says he was really excited to show the film here because the movie opens in Philadelphia. Though he added, it doesn't go well.

"It's the most intense thing you'll see all summer," Pitt said.

Needless to say, social media was abuzz with all things Pitt. From Facebook to Twitter, fans in attendance made sure it was known they saw the Academy Award nominee in person.

Movie watcher Alex Stewart uploaded this Vine to Twitter:

World War Z opens in theaters on June 21st.