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    Owen Wilson and Reese Witherspoon in a clip from How Do ...

    Sony Pictures

    by Sony Pictures

    HOW DO YOU KNOW - in theaters 12/17/10 How Do You Know is a comedy from Academy Award®-winning writer-director James L. Brooks (As Good As It Gets, Broadcast News, Terms of Endearment), starring Reese Witherspoon, Owen Wilson, Paul Rudd and Jack Nicholson.