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It might have been her greatest role yet: Oscar-winner Kate Winslet helped rescue Virgin mogul Richard Branson's elderly mother from a burning house.

And no, she didn't do this in a movie -- this actually happened.

After the fire that destroyed his Caribbean home, Branson said in his blog that he wanted to offer "many thanks to Kate Winslet for helping to carry my 90 year (old) mum out of the main house to safety."

SODAHEAD SLIDESHOW: See the most heroic celebrities.

Branson said about 20 people -- including Winslet, her children and his mother -- were staying in the 8-bedroom Great House on Necker, his private isle in the British Virgin Islands, when it was struck by lightning during a tropical storm early Monday.

The British billionaire -- who was staying in another property nearby with his wife and son -- said no one was hurt.

But Winslet is not the only celeb to come to the rescue lately. "The Notebook" actor Ryan Gosling was recently caught on camera helping to break up a street fight in New York City, E! Online reports.

From Winslet to Gosling to Demi Moore, let us know: Who is the most heroic celebrity?