Tops at the Box Office

1. Shrek Forever After- $25.3M/$183M

For the third week in a row Shrek's swansong holds court at the top of the charts. By comparison to it's three predessecors, however, it's lagging behind pretty far, some $70M less than Shrek the Third.

2. Get Him to the Greek- $17.4M

The biggest new release of the week got off to a similar debut as the film it spun off from, Forgetting Sarah Marshall, which opened at $17.7M. The two films are wildly different, sharing only a single returning character. As far as 2010 comedies go, it's off to a better start than the wildly disappointing Hot Tub Time Machine.

3. Killers- $16.1M

Now this comes as a surprise. This one had box office dud written all over it, instead it trumped nearly every new release of the week. Considering the marketing for this one was pretty non-descript other than looking like a poor man's Mr. and Mrs. Smith, you have to assume the reason it fared so well were Ashton Kutcher and Katherine Heigl.

4. Prince of Persia: The Sands of Time- $13.9M/$59.5M

Dropping 54%, it's looking the sand is running out of the hourglass pretty quick.

5. Sex and the City 2- $12.7M/$73.4M

Absolutely Fabulous...er, Sex and the City 2 is nearly $30M worse off than the original film was at this point. Just sayin', it's looking more and more like a fashion disaster for the ol' girls.

6. Marmaduke- $11.3M

Maybe it's due to the fact that we just had a talking animal flick like Furry Vengeance lay a steaming pile on moviegoers just a couple of weeks ago, sapping any urge people might've had to see another. Not that Marmaduke had a lot of buzz anyway. Most people under the age of 40 don't know anything about the comic strip, so it just looked like another talking mutt flick. And not a particularly good looking one at that.

7. Iron Man 2- $7.78M/$291M

8. Splice- $7.45M

The biggest disappointment this week, Splice failed to gain any sort of foothold, which is typical for sci-fi movies during the summer months. Unfortunately, creature flicks like this often get pushed to the background when up against summer blockbusters. It didn't help that the number of screens was relatively modest, and the marketing couldn't seem to find a balance between the science and the horror.

9. Robin Hood- $5.13M/$94.3M

10. Letters to Juliet- $2.95M/$43.3M