Reuters has a report on the tight box office race this weekend. Here's a clip:

"Madagascar" reached the century mark five days earlier than the studio's "Shark Tale" last fall and one day faster than the first "Shrek" in May 2001. The plot revolves around the residents of a zoo who break out and discover that life in the wild is not what they expected.

Paramount Pictures' Adam Sandler comedy "The Longest Yard" also inched up one place in its second weekend, to No. 2, with $26.1 million. The 10-day total for the prison football remake stands at $95.8 million.

Close behind was 20th Century Fox's "Star Wars: Episode III -- Revenge of the Sith" with $26.0 million for the weekend. It has earned $308.8 million to date, and hit $300 million in a record 17 days, beating last summer's "Shrek 2" by one day. Fox expects it to hit $400 million, approaching the $431 million total of the 1999 "Star Wars" installment "The Phantom Menace." The overseas total is $308.4 million, with the studio forecasting that haul to reach $500 million.

And E! Online reports the same:

The zoo crew racked up $28.7 million in its second weekend to move up from second place to first, per preliminary studio tallies Sunday, in what is now the 15th consecutive down week from last year.

Also moving up, The Longest Yard, which earned an estimated $26.1 million in its second week.

If estimates hold up, the prison pigskin comedy will be a touchdown ahead of Star Wars: Episode III--Revenge of the Sith. After two weeks on top, the prequel slipped to third place with $26 million.

This week's top new contender, Cinderella Man, didn't have enough punch to debut higher than fourth place. The Russell Crowe-led Depression tale of pugilist James J. Braddock slugged its way to $18.6 million.

For all of the numbers, as always visit BOMojo.