Saw the show last week at MSG. I'm not the biggest Maiden fan in the world but it was really, really good. The audience was hugely enthusiastic and everyone around me knew all the words. Took me back to about 1983 with all those wacky t-shirts.
I liked Dio a lot, and Craig Goldy sounded better to me than did Doug Aldrich who played with Dio last summer. Motorhead played loud and fast and seemed pised off that the crowd wasn't more into it. They left to about two straight minutes of empty-stage pure awful delay/loop/feedback, and subsequent applause.