The top films at the North American box office (Reuters)

Reuters - Following are the top 10 movies at the North American box office for the weekend beginning on July 29, with "Cowboys & Aliens" and "The Smurfs" producing a tie for first place, according to studio estimates compiled on Sunday by Reuters.

Source: http://us.rd.yahoo.com/dailynews/rss/movies/*http://news.yahoo.com/s/nm/20110731/film_nm/us_boxoffice_chart

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