The film highlighting rehearsal footage taken while the pop star was preparing for his comeback concerts in London this summer was directed by Kenny Ortega and earned $21.3 million this past weekend.

“This Is It’ was scheduled to be in theatres for only two weeks but after earning over $100 million worldwide since Tuesday, its release has been extended through U.S. Thanksgiving at the end of November.

Taking second spot this weekend, falling from first last weekend, was “Paranormal Activity”. The thriller which cost only $15,000 to make added $16.5 million to its one month total of almost $85 million.

“Law Abiding Citizen” starring Gerard Butler and Jamie Foxx moved up from fourth to third this weekend with $7.3 million.

Also moving up a spot, in fourth this weekend was “Couples Retreat”. This Vince Vaughn, Jason Bateman, Jon Favreau, and Kristen Bell comedy grossed just over $6 million at the box office.

Finally, rounding out the top five, plummeting from second to fifth was the sixth instalment of the “Saw franchise”. “Saw VI” brought in $5.6 million in its second week.

Michael Jackson This Is It Takes the Box Office