Robert PattinsonPattinson hurts his butt, 'Terminator' slapped with PG-13 and more ...

Robert Pattinson got off to a painful start filming the 'Twilight' sequel 'New Moon' in Canada. During his first scene on set, the actor pulled ligaments in his gluteus maximus and was forced to undergo a thorough butt massage before returning to work.

In other news, it looks like 'Terminator Salvation' will be toning down the graphic violence and female nudity (sorry, Moon Bloodgood fans) to secure a PG-13 rating; director Gore Verbinski won't be returning for 'Pirates of the Caribbean 4,' and Sarah Michelle Gellar may reprise her role as the titular vamp destroyer in a new 'Buffy the Vampire Slayer' movie.

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