Ocean's Thirteen knocked Pirates Of The Caribbean: At World's End off the number one perch as it opened on an estimated $37.1m.

The ongoing capers of George Clooney, Brad Pitt, Matt Damon et al trailed behind the $39.1m franchise record launch of Ocean's Twelve in 2004, but this was a respectable opening nonetheless.

Overall box office trailed the previous year for the second weekend in a row as the top 12 releases grossed $133.6m, approximately 9% behind the same weekend last year.

At World's End slipped to second place as $21.3m raised its cumulative total to $253.6m after three weekends, while Universal's comedy Knocked Up held well in its second weekend to rank third on $66.2m.

Sony's animated tale Surf's Up opened in fourth on $18m and may struggle given the surfeit of penguin films these past few years.

Hostel: Part II, released in North America through Lionsgate, opened in sixth on $8.8m and failed to live up to the original horror story's $19.6m number one debut in January 2006.

Waitress fell three to ninth for Fox Searchlight and has grossed $12m after six weekends on release. After four weekends Shrek The Third ranks fifth on $281.9m and after six Spider-Man 3 ranks eighth on $325.7m.

Next weekend's wide releases are: Fox's superhero sequel Fantastic Four: Rise Of The Silver Surfer with Ioan Gruffudd, Chris Evans, Jessica Alba and Michael Chiklis; and Warner Bros' family adventure Nancy Drew starring Emma Roberts.

Estimated Top 10 North America June 8-10, 2007
Film (Distributor)/International distribution/Estimated weekend gross/Estimated total to date
1 (-) Ocean's Thirteen (Warner Bros) WBPI $37.1m -
2 (1) Pirates Of The Caribbean: At World's End (Buena Vista) BVI $21.3m $253.6m
3 (2) Knocked Up (Universal) UPI $20m $66.2m
4 (-) Surf's Up (Sony) SPRI $18m -
5 (3) Shrek The Third (Paramount) PPI $15.8m $281.9m
6 (-) Hostel: Part II (Lionsgate) SPRI $8.8m -
7 (4) Mr Brooks (MGM) Element Films Int'l $5m $18.7m
8 (5) Spider-Man 3 (Sony) SPRI $4.4m $325.7m
9 (6) Waitress (Fox Searchlight) Fox Intl $1.7m $12m
10 (10) Disturbia (Paramount) PPI $550,000 $77.8m