No surprises here. ‘Baby Mama’ opened Friday with a good $6.3 million at 2,543 theaters, a little under $2500 per screen. While ‘Harold & Kumar Escape From Guantanamo Bay’ came in just a couple of seconds later, doing $5.8 million at 2,510 screens. It made an even better opening than its prequel in 2004, with a little over $2300 per screen.

‘Forgetting Sarah Marshall’ was down 43% in its second week, while ‘The Forbidden Kingdom’ dropped 59%, continuing the switch we saw earlier this week. They respectively did $3.4 and $3.2 million.

The horror ‘Prom Night’ is finally on its way out, but still brought in $1.7 million on the first day of its third week. Some unexpected legs, for a movie that was solely reliable on its marketing. The consolation prize however, goes to Hugh Jackman and Ewan McGregor. While nobody was expecting an amazing opening, the pair only managed to make $750.00 with their thriller ‘Deception.’

[update]
Here are the final estimates for the weekend, with ‘Baby Mama’ beating last week’s opening by ‘Forgetting Sarah Marshall.’ And ‘The Forbidden Kingdom’ surprisingly jumping before ‘Forgetting Sarah Marshall’ again too.

‘Baby Mama‘: $18.3 million ($7200 per screen)

‘Harold & Kumar Escape from Guantanamo Bay‘: $14.6 million ($5800 per screen)

‘Forbidden Kingdom‘: $11.2 million ($3550 per screen)

‘Forgetting Sarah Marshall‘: $11 million ($3900 per screen)

‘Deception‘: $2.2 million (10th place, $1100 per screen)

Forbidden Kingdom: $27,025,134 ($70 million budget)
Forgetting Sarah Marshall: $24,062,895 ($30 million budget)
Prom Night: $10,251,048 ($20 million budget, second week)

Every week we take a look at how the top three movies did at the box office, from Friday to Thursday. This week clearly started with the domination of ‘The Forbidden Kingdom’ in the weekend. ‘Forgetting Sarah Marshall’ however, slowly took over and is definitely showing more legs. It’s expected to have another good weekend, since its only competition is ‘Baby Mama,’ mainly targeted at a younger audience.

‘88 Minutes’ with Al Pacino didn’t manage to make the third spot, bringing in just $9 million behind ‘Prom Night.’ The horror had another good week, making half of what it did the week before, where maybe a bigger drop was expected. This week it still made over 50% of its budget.

‘Forgetting Sarah Marshall’ had the best budget/box office ratio, bringing in 80% of its budget. ‘The Forbidden Kingdom’ managed to only take a little under 40%, but it’s less dependent on the US market, releasing in Hong Kong this week.