Leonardo DiCaprio and Marion Cotillard in 'Inception''Inception' has triumphed at the box office for a third straight week, becoming only the third movie this year to three-peat (after 'Alice in Wonderland' and 'Shrek Forever After'). It won despite the addition this week of three new wide-release movies, one of which ('Dinner for Schmucks') did very well, opening strongly in second place, as the other two ('Cats & Dogs: The Revenge of Kitty Galore' and 'Charlie St. Cloud') fell by the wayside.

'Inception,' which really hasn't had a slow day since it opened on July 16, won this week's contest with an estimated $27.5 million. Despite competition from the new releases and from fellow action attraction 'Salt,' its business fell only a third from last weekend. Thanks in large part to repeat business from viewers trying to untangle its plot, the sci-fi thriller has grossed $193.3 million in 17 days, with the $200 million mark likely to fall Monday or Tuesday.