Hollywood may have run out of summer hits, but an anti-Obama documentary is helping to fill the gap. Holdover movies easily topped the weekend box office again, led by Sylvester Stallone's "The Expendables 2" at No. 1 for the second-straight weekend with $13.5 million. The weekend's new wide releases were overshadowed by "2016: Obama's America," which expanded from limited to nationwide release and took in $6.2 million to finish at No. 8.