Interesting I wasnt really expecting this to go straight to number 1 in the box office.

Beyonce Knowles’ new movie Obsessed has romped to the top of the U.S. box office chart with opening weekend (24-26Apr09) takings of $28.5 million (£19.65 million)

The thriller stars Knowles and Idris Elba as a couple targetted by a crazed office temp, played by Heroes star Ali Larter.

Obsessed bumped 17 Again from the top spot; the Zac Efron comedy slid down to second place with earnings of $11.665 million (£8.04 million).

Fighting landed third place with $11.441 million followed by Jamie Foxx‘s new movie The Soloist, which managed a disappointing $9.715 million (£7.81 million).

Disney feature Earth rounded out the top five with $8.554 million (£5.89 million) – the best ever opening for a nature movie.