Weekend Box Office: Weak Numbers, but Anti-Obama Documentary Performs

August is going out with more of a whimper than a bang, as none of the new openers for the weekend managed to make the top five at the box office. In fact, the most successful of all of them was a political documentary.

The two highest-grossing new movies were "Premium Rush," the new chase movie with Joseph Gordon-Levitt, and "2016: Obama's America," a conservative documentary with the aim of criticizing President Obama's record. Both movies grossed about $6.3 million over the weekend, with the anti-Obama doc holding a cumulative total of about $9 million.

That makes the documentary the most successful conservative documentary of all time, and the highest-grossing political documentary of the year. Of course, it it leaps and bounds away from the grosses of Michael Moore's docs or select nature films, so it still has a lot of ground to cover before it starts hitting the real record books.

Meanwhile, the Dax Shepard/Kristen Bell comedy "Hit and Run" managed only $4.6 million over the weekend, coming in 10th place.

First place went to "The Expendables 2," which earned another $13.5 million for a cume of $52.3 million. It is still performing a little under the first movie, but is holding up well. "Expendables" was followed by "The Bourne Legacy," which made another $9.2 million for a cume of $85.4M, putting it on track to break $100 million and most likely encourage the continuation of the franchise.

Those were followed by returning films "ParaNorman," ($8.5M, $28.2M), "The Campaign" ($7.4M, $64.5M), and "The Dark Knight Rises" ($7.1M, $422.1M), which rounded out the top five. "Paranorman" had a noticeably small drop (39%) from last week, so it could have legs going forward.

That pretty much finishes up the summer box office, as Saturday marks the beginning of September. Though there were flashes fo box office brilliance ("The Avengers" for example), things seemed a bit sluggish otherwise, and there were certainly duds ("Battleship") here and there.

1. "The Expendables 2" - $13.5 million ($52.3M)
2. "The Bourne Legacy" - $9.2 million ($85.4M)
3. "Paranorman" - $8.5 million ($28.2M)
4. "The Campaign" - $7.4 million ($64.5M)
5. "The Dark Knight Rises" - $7.1 million ($422.1M)