Penguins evolve the power of flight

OK, so it’s a bit off-topic – except inasmuch as it might have fooled a few creationists – but here’s another classic BBC April Fool: Flying penguins! Priceless. There’s also a featurette on how they made it.
Not available for download, sadly, and only on iPlayer for a few more days, but I bet somebody will rip it and post it somewhere on the interwebs. Do please give me a shout if you find a downloadable version…