Tony Stark piloted to the top of the box office but not the record books.

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"Iron Man 2," the sequel starring Robert Downey Jr. as Marvel's gadget-happy billionaire superhero, earned $133.6 million domestically on its opening weekend, according to distributor Paramount Pictures' estimates Sunday. The opening rocketed past the original $98.6 million debut in 2008 and landed the record as the fifth-biggest opening weekend.

"We're thrilled with the combination of the way it's playing across the board," said Don Harris, Paramount's vice president of distribution. "It's playing as a fanboy movie, but it's also playing as family movie, too. I even know a bunch of people who are planning to take their mothers to see 'Iron Man 2' on Mother's Day, which really made me chuckle." "Iron Man 2" has taken in $194 million overseas since it debuted in many international markets last week, bringing its worldwide total to over $327 million. While Hollywood blockbusters typically open around the same date in most countries, some get an overseas jump of a week or more on their U.S. debuts. The biggest opening came from China with $7.3 million.