As Michael Jackson's death was confirmed, my thoughts turned to the one and only time I ever saw the "King of Pop," right here in Orange County. He wasn't on stage solo or with the Jacksons (Five or otherwise), nor was he attending the opening of Captain EO at Disneyland. He was just out for a night of ballet in Costa Mesa.Actually, his entrance into the Performing Arts Center's Segerstrom Hall threatened to overshadow legendary dancer Mikhail Baryshnikov's first appearance on an Orange County s