Friday Box Office: "The Other Guys" knock off The Dream Guys for the number one spot

The Will Ferrell/Mark Whalberg action comedy "The Other Guys" arrested the top spot at the North American box office on Friday. The comedy pulled in a big $13.1 million from 3,650 screens on its opening day, which was enough to knock the smash hit "Inception" from the top spot. Watch for Marky Mark and Ricky Bobby to pull in $33-35 million by the end of the weekend.

Speaking of the Christopher Nolan film, "Inception" fell to third with $5.5 million for Friday. Down a slight 31% from last Friday, the Leonardo DiCaprio hit should see $19 million for the weekend, which would bring its domestic total to the $227 million mark.

Opening in second place with $6.6 million was the latest in the "Step Up" series, the imaginatively titled "Step Up 3-D". Opening in 2,435 theaters (over 3/4 of them 3-D), the sequel is looking at roughly $16-18 million for its debut weekend, which would make it the lowest opening of the series so far, even with the added benefit of charging more for 3-D presentations.

Dropping like a rock in its second weekend, no doubt affected by the arrival of "The Other Guys", was Paramount/Dreamworks' "Dinner For Schmucks". Off a steep 60% from its opening day a week ago, the Steve Carell comedy pulled in $3.3 million on Friday for what looks to be a $11 million weekend. Possessing another decent hold is the Angelina Jolie action flick "Salt", which saw a 45% drop from last Friday to collar $3.2 million for a possible $11 million weekend.

Weekend estimates will be announced on Sunday. Check back in the afternoon for the weekend roundup.