Movies
The sci-fi film's $24 million haul is enough to hold off competition from other new releases I Love You, Man and Julia Roberts/Clive Owen thriller Duplicity, which land at number two and three respectively.
Last week's box office winner Race To Witch Mountain slips to number four, while superhero comic adaptation Watchmen falls to number five.
The US top ten in full:
1. (-) Knowing - $24,814,000
2. (-) I Love You, Man - $18,005,000
3. (-) Duplicity - $14,402,000
4. (1) Race To Witch Mountain - $13,004,000
5. (2) Watchmen - $6,725,000
6. (3) The Last House On The Left - $5,921,000
7. (4) Taken - $4,100,000
8. (6) Slumdog Millionaire - $2,700,000
9. (5) Madea Goes To Jail - $2,510,000
10. (9) Coraline - $2,143,000
Movie Reviews
'The Vow' reviewChanning Tatum tries to win back Rachel McAdams in romantic drama The Vow.
At the Movies
This Week's 5 Hottest Movie VideosTrailers for The Avengers and Spider-Man are among this week's highlights in film.
Movies Interviews
Daniel Radcliffe talks 'Woman in Black'The actor talks to Digital Spy about his first post-Potter outing.
Box Office Charts
'Chronicle' leads UK box officeSuperhero drama Chronicle leads the UK box office ahead of Journey 2.
