Here on Long Island, Billy Joel is more than just a rock star, he's "one of us". Long Island has produced more than its fair share of talent -- Jerry Seinfeld, Billy Crystal, Pat Benatar, Natalie Portman, Eddy Murphy, Mariah Carey, the Baldwins ...But Billy Joel revels in his Long Island roots, he identifies as a Long Islander, his lyrics refer to many local places -- Oyster Bay, Cold Spring Harbor, Montauk, As a person in their 20's if they know any Billy Joel songs, and I'm not sure you'll get an answer. Ask that question of a 20-something who grew up on Long Island, and you're bound to hear "Sing us a song, you're the Piano Man..." It's become our regional anthem. They sing it at Citi Field during Mets games. The Nassau Coliseum, now closed for renovations, had one final concert. And who was asked to perform that night? Our native son. Proving once again that he's a local, Billy Joel has now pledged $1 million to Long