Ocean's Thirteen debuted to slightly lower numbers than parts Eleven and Twelve, yet still topped the weekend box office with a $37.1 million haul, unseating POTC 3 ($21.3 mil) from the No. 1 spot. Rounding out the top five were Knocked Up ($20 million), Happy Feet: The Funny Version Surf's Up (opening with $18 mil) and Shrek the Third ($15.75 mil). The week's other newbie, Hostel Part II (or as I like to call it, "Poor, Poor Heather Matarazzo") came in at No. 6 with $8.75 mil, less than half of the original's first-weekend take. Overall, the box office was down nine percent from a year ago, when Cars opened with $60 mil.