Madonna was accompanied by her 11-year-old daughter, Lourdes, and the film's director, Nathan Rissman. Ritchie was not present.

Moore, who won an Oscar for his 2002 documentary "Bowling for Columbine," said he was humbled to be able to call Madonna a friend.

"She has such an incredible heart and such a generous spirit," he said. "She does so much out of the glare of the lights to make the world a better place."

Madonna had praise of her own for Moore, 54, a Flint-area native who has a home near Traverse City.

"There aren't a lot of role models for us in the world, or people we can look up to," she said. "People who are not afraid to stick their neck out, people who are not afraid to stand up for things and be unpopular, to go against the grain, think outside the box.

"And we need, and I need, Michael Moore in my life."

Madonna appeared amid the release of a tell-all book by her brother and speculation about her relationship with New York Yankees star Alex Rodriguez. Madonna and Rodriguez both deny an affair. She did not address the dust-ups in her appearance Saturday.

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