No one saw this one coming. The kid-friendly 3D pic The Smurfs has literally tied Cowboys & Aliens at the box office.

With Daniel Craig and Harrison Ford starring, Cowboys & Aliens was expected to be a mega-hit but it underperformed, all the experts agree, by bringing in an estimated  $36.2 million in its opening weekend.

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The Smurfs, with Neil Patrick Harris starring along with a bunch of tiny blue animated creatures, is expected to bring in the exact same amount!

Even if the final numbers available Monday morning put Cowboys & Aliens slightly ahead, the result is still being considered the box office upset of the year.

Smurf happens!

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