The surprised yelp sent up by your friendly staff here at Movieline HQ upon reading that Julianne Moore was cast as Sarah Palin in the upcoming HBO movie Game Change was so loud that you could have probably heard it all the way in Alaska. Or Russia. Whichever. Deadline reports that Moore will play the ex-governor/ex-reality star in the Jay Roach-directed adaptation of Mark Halperin and John Heilemann's controversial book about the 2008 presidential election. Hopefully, she's boning up on her folksy slang and passive aggression. [Deadline]