Brad Pitt Makes Surprise 'WWZ' Appearance

Brad Pitt made a surprise appearance at the first screening of
World War Z Saturday in London, ahead of the film’s highly anticipated premiere Sunday.

"This has been a long-time coming – this film. I think we've got something original," Pitt said, thanking the media who flew in from around the world. "I think we've got something genre-bending. I think we've got something terribly realistic for summer fair. I'll let you guys decide."

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World War Z, based on the novel by Max Brooks, stars Pitt as a United Nations employee who must find a way to stop the pandemic that's defeating armies and collapsing governments. The film hits theaters June 21.

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Angelina Jolie is rumored to be making her first appearance since announcing she underwent a double mastectomy at Sunday's London premiere.