'Saw IV' tops US box office chart

Saw IV has debuted at the top spot at the US box office.

The horror sequel beat new Steve Carell film Dan In Real Life, which went in at number two.

Last week's number one 30 Days of Night fell to three, while We Own The Night, starring Joaquin Phoenix, was another new entry in ninth.

The top ten movies in full:

1. (-) Saw 4 - $32,110,000
2. (-) Dan In Real Life - $12,081,000
3. (1) 30 Days of Night $6,700,000
4. (3) The Game Plan - $6,257,000
5. (2) Why Did I Get Married? - $5,740,000
6. (4) Michael Clayton - $5,030,000
7. (6) Gone Baby Gone - $3,900,000
8. (5) The Comebacks - $3,450,000
9. (-) We Own The Night - $3,400,000
10. (8) The Nightmare Before Christmas (re-issue) - $3,347,000