Robots go head-to-head with priceless artifacts at movie theaters

New releases "Terminator Salvation" and "Night at the Museum: Battle of the Smithsonian" battle for the weekend box office top spot. If Arnold were back for Round 4, this fight would be more of a no-brainer but Christian Bale vs. Ben Stiller is a less interesting, and less easy, duel to predict.
Warner Brothers/ 20th Century Fox
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