Critics dubbed Alfonso Cuaron's Gravity "extraordinary," and moviegoers this weekend sealed the deal: The George Clooney-Sandra Bullock space drama soared to No. 1 at the box office, with a $55.6 million opening that set a record for an October debut. That's about $20 million more than Gravity was predicted to make, notes the LA Times; it's also an opening-weekend record for both Clooney and Bullock, adds the AP. Rounding out the top five were Cloudy With a Chance of Meatballs 2 ($21.5 million), Runner Runner ($7.6 million), Prisoners ($5.7 million), and Rush ($4.8 million).