Silent Monk (Jet Li) and Lu Yan (Jackie Chan) in a scene from 'THE FORBIDDEN KINGDOM'

Their new period action film, The Forbidden Kingdom, beat sex comedy Forgetting Sarah Marshall to the top spot with an opening weekend take of $20.9 million (GBP10.4 million).

Forgetting Sarah Marshall came in a close second, ahead of former chart-topper Prom Night at three and Al Pacino's new thriller 88 Minutes at four.

Family film Nim's Island rounded out the top five, according to studio estimates.

Source: WENN