1) The Dark Knight $75.6 million
2) Step Brothers $30 million
3) Mamma Mia! $17.8 million
4) The X-Files: I Want to Believe $10.2 million
5) Journey to the Center of the Earth $9.4 million
6) Hancock $8.2 million
7) WALL-E - $6.3 million
8) Hellboy II: The Golden Army $4.9 million
9) Space Chimps $4.3 million
10) Wanted $2.7 million

Another week, another set of records for The Dark Knight. The Christopher Nolan sequel topped the box office for the second week in a row, taking in an estimated $75.6 million in its second weekend in release. It also set records for fastest to $200 million, $250 million and $300 million and it also set 5-day, 6-day, 7-day, 8-day, 9-day and 10-day records along with the record for the best opening week (Friday to Thursday. The film currently has an overall gross of $314.2 million.

Two newcomers made the top 10, but were severely overshadowed by The Dark Knight. Step Brothers, the new Will Ferrell/John C. Reilly comedy, took a distant second place with an estimated $30 million. The film is almost halfway to its $65 million budget and the film turned in a solid performance with a $9,696 per-screen average from 3.094 theaters. The other newbie didn't fare so well.

The X-Files: I Want to Believe opened in fourth place with an estimated $10.2 million, behind the holdover Mamma Mia!, still performing strongly with $17.8 million, just a 35.6% drop from last weekend's debut. The X-Files: I Want to Believe could only manage a $3,202 per-screen average from 3,185 theaters and it might even be a struggle to get to the break-even point of $30 million.

In limited release, one newbie fared decently amongst the blockbusters. Brideshead Revisited took in an estimated $332,000 from just 33 theaters, good for a solid $10,060 per-screen average. The film is set to expand to an estimated 225 theaters this coming weekend.

Next week sees the return of another popular franchise with The Mummy: Tomb of the Dragon Emperor along with Swing Vote in a semi-wide release. In limited release, the horror film Midnight Meat Train will hit select theaters.

The Dark Knight was released July 18th, 2008 and stars Christian Bale, Heath Ledger, Aaron Eckhart, Michael Caine, Maggie Gyllenhaal, Gary Oldman, Morgan Freeman, Monique Gabriela Curnen. The film is directed by Christopher Nolan.