Mo' Better Blue: I raved about the Discovery Channel mini-series The Blue Planet when it ran a few months back. In the nick of time I discovered that four new hours are going to debut tomorrow (Sunday). Lucky I happened on promo, otherwise I may have had to wait a day or two until they re-ran it. Count on it being at least a cut above your garden variety nature show; if it achieves the quality of the first, it will be astonishing.