We all saw, and loved Planet Earth in its various forms, and now it's time for Life to air on pretty much every Discovery network at 8 p.m. (though interestingly, not HD Theater, which is fine -- we wouldn't want to miss our WRC highlights anyway.) We got an early preview of the first of two episodes that will be airing tonight and it was fantastic. It'll be hard to convince hardcore Attenborough fans to accept any substitute in narration but Oprah does a good job, and there's no doubt that the bar has been raised in the genre of watching animals do incredible things in super slow-mo HD. What was supposed to be just a few minutes preview turned into watching the entire thing, and rewinding just to watch that chameleon part once more turned into a complete second viewing. So, will you be tuning in?