WASHINTON – Hollywood didn't contribute official speakers to Barack Obama's convention. But, man, did celebrities flock to Denver in droves. Is Oprah in the house? That was Matthew Modine! Oh, wow, there's Anne Hathaway.

All that this week, along with Thursday's final-night lineup featuring A-list performers like Sheryl Crow and Stevie Wonder and Obama's splashy acceptance speech in a packed-to-the-gills football stadium, will be scooped up greedily by Republican John McCain, as grist for his refrain-of-the-moment: that his Democratic opponent is all flash and no pan.

Camp McCain has already gotten impressive mileage out of mocking the Democrats' Invesco Field set, a stage before ivory columns on the 50-yard line. “The Temple of Obama,” they call it.

They kept that drumbeat going so long that Democrats dug up a photo of George Bush accepting the 2004 GOP nomination in front of similar Greek columns. That shut up Republicans, but only temporarily.

Republicans have sought for months to pin the celebrity label on Obama, an effort that gathered steam after the Democrat's speech in Berlin drew over 200,000 people. Remember McCain's ad comparing Obama to Hollywood bad girls Paris Hilton and Britney Spears?

Now, there will no doubt be new ads, with footage from a convention where real Hollywood famous types were scattered among some 75,000-plus regular folks. Not that this has much to do with Obama, as Democratic conventions for years have drawn more Hollywood stars than the Republicans.

It's all about one simple message: Obama is appealing, but an empty suit. Republicans are striving to turn some of Obama's greatest strengths – his youthful charisma, gift for oratory and magnet-like ability to draw enormous, jubilant crowds, all of which have made Republicans green with envy – against him.

But do voters buy it? Does the glitz, glamour and grandeur play Obama's way or into McCain's hands?

Michigan Gov. Jennifer Granholm said Obama has more to gain than lose. Singer Crow noted Obama is hardly a celebrity hanger-on.

And the Obama campaign said the convention's last night was moved from the convention hall to the stadium to increase the candidate's interaction with real people, not reduce it. As Obama said this summer, it's “an opportunity for 80,000 people who might otherwise not have been able to participate to get involved.”

In his acceptance speech, Obama fought back against the “celebrity” tag. He said war veterans remind him of his grandfather, struggling mothers remind him of his own, laid-off workers remind him of those he met in Chicago as a community organizer and persevering entrepreneurs remind him of his grandmother.

“I don't know what kind of lives John McCain thinks that celebrities lead, but this has been mine,” Obama said. “These are my heroes.”

Still, Obama's own polling shows that the GOP criticism has raised doubts about his experience.

This is one reason why Democratic convention planners kept celebrities mostly at bay. Not one convention speaker was a bona fide A-lister.

However, there was stardom aplenty in Thursday's audience: Susan Sarandon, Morgan Fairchild, Tim Daly, Jessica Alba, and Fergie, among others.

Republicans have their stars, too. Former actor and California Gov. Arnold Schwarzenegger is to speak at next week's GOP convention, though state business may make him a no-show. In 2004, the Republicans had addresses from television talk show host Elizabeth Hasselbeck and the husband-and-wife team of actress Angie Harmon and former football star Jason Sehorn.

But there is no question that Obama's wrapup show turned up the wattage.

AP Entertainment writer Ryan Pearson and reporters Ted Anthony, Liz Sidoti, Scott Lindlaw, Phil Elliott and Darlene Superville contributed to this story from Denver.