Television’s all-time greatest naturalist, Sir David Attenborough (no, I haven’t forgotten about Jacques Cousteau – he’s a respectable second place), was invited by President Barack Obama to visit the White House and discuss nature. The result, televised for the BBC, just was broadcast overseas, and, over the weekend, here in the States. BBC America repeats it tonight. For a full story, and for Obama’s unexpected role as TV-Critic-In-Chief, see Bianculli’s Blo