Michael Jackson's "This Is It" Moonwalks to Top of U.S. Box Office

Michael Jackson's "This Is It" rehearsal documentary has soared to the top of the U.S. box office, taking $21.3 million in its opening weekend.

The film, which follows the Thriller legend as he prepared for his ill-fated London concerts, premiered worldwide on Wednesday.

Within five days This Is It has earned a massive $32.5 million in the states and $101 million worldwide - prompting Sony bosses to extend its run in the U.S. until Thanksgiving weekend, and add showtimes in other territories on a country-by-country basis.

However, its success still falls short of last year's $31.1 million U.S. opening weekend for Hannah Montana & Miley Cyrus: Best of Both Worlds Concert.

This Is It bumped low-budget horror film Paranormal Activity from number one to the second spot, with $16.5 million in earnings; however, moviegoers proved they were seeking a thrill over the Halloween weekend, helping Jamie Foxx and Gerard Butler's crime drama Law Abiding Citizen land at number three with $7.3 million in earnings.

Rounding out the top five is Vince Vaughn's comedy Couples Retreat and horror film Saw VI, earning $6.1 million and $5.6 million respectively.

Wild Things Run Wild at Box Office

Fantasy film" Where The Wild Things Are" has marched to the top of the U.S. box office, taking $32.5 million in its opening weekend. Director Spike Jonze's adaptation of Maurice Sendak's beloved children's book boasts a castlist including James Gandolfini, Forest Whitaker and Chris Cooper.

The animated adventure easily beat Jamie Foxx and Gerard Butler thriller "Law Abiding Citizen" into second place, but the movie - another box office debutant, still managed an impressive $21.3 million.

Low budget horror film "Paranormal Activity" jumped up the chart to third place, taking $20.2 million, ahead of Couples Retreat and The Stepfather, which round out the top five.