Planet Earth" on the VideoScan charts, the couple makes good business sense, too. As much as we love "Planet Earth," though, adding more titles to the genre is a good thing. Take heart, PBS is doing its part by bringing "Nature" to Blu-ray. With 26 seasons under its belt, it's safe to assume there's plenty of good footage; hopefully they've gathered up the best HD bits for the releases. Come May 20th, indie distributor Questar will be bringing out four titles: "Desert Lions" (originally aired 2008 in HD), "In the Valley of the Wolves" (originally aired 2007, shot in HD), "Under Antarctic Ice" and "Shark Mountain" (both originally aired 2003, fingers crossed on picture quality). Yeah, we can't guarantee those last two won't be a little "soft" looking, but we can guarantee that for your $25 retail, you can watch without any pledge drive interruptions!