Sony will be pleased. Not only did their limited release Michael Jackson tribute do well, it did very, very well. As MJ fans flocked to the cinemas, the deceased King of Pop danced, moonwalked and crotch-grabbed his way to the top of the US Box Office, all to the tune of $32.5m - or, worldwide, $101m. That's a lot of money.

In just five days, This Is It has accrued the kind of money you'd expect from a summer blockbuster, not an autumn documentary. People may be buzzing about Paranormal Activity's tidy sum of $84.4m (really impressive for a film made for barely any money), but that took three weeks to earn. Michael's been dead for four months, but when it comes to striking box office gold, this is it.

No wonder, then, that Sony have announced plans to extend the movie's two-week run. So much for a briefly available special event. Then again, after they expected figures closer to $250m, it gives the die-hards time to go another two times. They'll probably take their kids along too.