Winslet says she's especially honored to be mentioned in the same breath as British acting legends Helen Mirren and Maggie Smith, who were nominated for their supporting roles in Gosford Park.
Moulin Rouge tied A Beautiful Mind for the second most nominations, with eight each, including art direction, editing and cinematography.
But the creative force behind Moulin Rouge, director Baz Luhrmann, was among those passed over, and director Ron Howard said he knows the feeling well.
"I couldn't help but immediately think about and kind of identify with, you know, a number of people whose names have been bandied about, considered as likely candidates and they didn't hear their names called. I've experienced that," he said.
"I must say that shortly after the excitement died down a little bit, I was thinking about that as well."
After directing many box office blockbusters, including Cocoon and Apollo 13, Howard earned his first nomination. But now, A Beautiful Mind heads into the Oscars as one of the clear frontrunners. "To have eight nominations," Howard said, "it meant a lot to me as a director." ABCNEWS Radio and ABCNEWS.com's Buck Wolf contributed to this report.