Professor Xavier and his young mutants might have the power to help save the world from nuclear war, but the X-Men franchise pre-boot (prequel reboot) First Class didn’t quite soar into the stratosphere, opening to a decent $56 million (unlike many other recent blockbusters, that's without a 3D price bump). Still, hopefully good word of mouth may mean it has strong legs.

Despite a hefty opening, negative buzz looks to have made The Hangover 2’s own legs a little wobbly, as the comedy sequel tumbled 62% on its second weekend, earning $32.4 million. Still, a huge launch around the world means that Todd Phillips and co won’t be too worried – it’s already on course to earn as much as (or more than) the original. Kung Fu Panda 2 slipped to third with $24.3 million, while Pirates of the Caribbean: On Stranger Tides dipped to fourth with $18 million. Bridesmaids rounded out the top five, taking $12.1 million this weekend.

Thor fell one place to sixth, nabbing $4.2 million, while Fast Five was seventh with $3.2 million. Woody Allen’s Midnight in Paris continued to do well as it added $2.9 million in eighth place. Ninth was Jumping the Broom, which took $865,000 and switched places with Something Borrowed, which went down to 10th and $835,000.

To hone your powers of statistics and earnings, head over to school at Box Office Mojo.