There is little left to say about the singular Celine Dion that anyone who has ever been near a radio or TV set doesn't know already. If you love her, you probably know all about her recent past, in which she held court in Las Vegas for five years. You know that nearly all of those shows were sold out, and that during that time, she performed for some 3 million people. And you probably know that her Friday stop at the American Airlines Arena is part of her Taking Chances world tour, which kicked off last year in support of her latest English-language greatest-hits album, My Love: Essential Collection. And if she's not your cup of highly emotive tea and you steer clear of this show, well, you know your heart will still go on.