Weekend Box Office

1. The Dark Knight - $155.34 million - 1 wk (WB)
4366 screens / $35,579 per screen
2. Mamma Mia! - $27.61 - 1 wk (U)
2976 / $9276
3. Hancock - $14 ($191.5) - 3 wks (Sony) -56.4%
3776 / $3708
4. Journey .. Earth - $11.91 ($43.07) - 2 wks (NL) -43%
2830 / $4208
5. Hellboy II - $10.04 ($56.45) - 2 wks (U) -70.9%
3212 / $3125
6. Wall-E - $9.81 ($182.48) - 4 wks (BV) -47.8%
3310 / $2965
7. Space Chimps - $7.35 - 1 wk (Fox)
2511 / $2927
8. Wanted - $5.1 ($123.25) - 4 wks (U) -57.5%
2433 / $2095
9. Get Smart - $4.08 ($119.56) - 5 wks (WB) -43.3%
2135 / $1911
10. Kung Fu Panda - $1.75 ($206.51) - 7 wks (DW) -60.3%
1505 / $1163
11. Meet Dave - $1.64 ($9.37) - 2 wks (Fox) -68.9%
3011 / $543

Pretty much every major-studio wide release has a deal with the theaters. THey have to be there at least two weeks. When I got tickets for The Dark Knight, I noticed Meet Dave, in its second week, had been cut to one showing on one screen, at noon. So yeah, if many theaters did the same thing, Meet Dave would have a big drop-off. I don't think the same thing happened with Hellboy II. I think for those theaters where they opened it on two or screens, they cut it back to one screen to make room for Dark Knight, as they have the same core audience.

The Dark Knight broke the three-day opening record of all time. Mamma Mia! also opened comparable to last summer's Hairspray, so the counterprogramming worked. Space Chimps, however, showed that outside of Disney/Pixar, DreamWorks and Blue Sky, the animation gig is a tough market to break into.

Numbers from http://www.boxofficeguru.com