Below are the top 12 weekend final numbers from the North American box office:

1. G-Force - $31,706,934
2. Harry Potter and the Half Blood Prince - $29,462,187
3. The Ugly Truth - $27,605,576
4. Orphan - $12,871,483
5. Ice Age: Dawn Of The Dinosaurs - $8,408,430
6. Transformers: Revenge Of The Fallen - $8,124,427
7. The Hangover - $6,461,370
8. The Proposal - $6,379,926
9. Public Enemies - $4,352,650
10. Bruno - $2,832,870
11. Up - $1,687,307
12. (500) Days Of Summer - $1,635,772

Overall, the Box Office was down 7% on last weekend's total gross.

The number one film for this weekend is surprisingly not Harry Potters' lot but rather a computer animated film from Disney and Jerry Bruckheimer called G-FORCE. This $85M budgeted guinea pig 3-D film earned an astonishing $31.7M over the weekend to take out the top spot. The film is generally considered a joke but its numbers are not, although this large opening can be attributed to the high ticket price of 3-D cinemas.

HARRY POTTER AND THE HALF BLOOD PRINCE tumbled downward in to second spot this weekend as the lustre comes right off this latest installment in the blockbuster franchise. The film earned a decent $29.4M over the weekend, but lost 62% of its audience from last weekend. The film is on target to reach a similar final box office figure to its immediate predecessor, and has so far earned $221M against a $250M budget.

Katherine Heigl is back in the new rom-com THE UGLY TRUTH which managed a strong $27.6M to land in third place over the weekend, despite out-grossing Harry Potter on Friday. The R-rated comedy had a budget of $38M which makes this a winner, although the dreadful reviews and reception will likely make a huge dent in its overall box office in the coming weeks.

Opening in fourth spot is another horror film ORPHAN, which managed a very typical amount over the weekend for this genre with $12.8M. This will likely fall away like others of its type as time passes.

The films in spots five to nine all managed to hold reasonably well, with the biggest percentage drop of those films going to ICE AGE: DAWN OF THE DINOSAURS which dropped 52%. The film that got crunched severely this weekend however was BRUNO, which dropped all the way down to tenth spot with a paltry $2.8M. The film has now earned a disappointing $56M after opening to over $30M two weeks ago.

The US Box Office took in a total of $141,528,932 for the whole of the weekend 24-26 July 2009.