Maybe someone's posted this up in the past but I came across this a few months ago when I was searching for penguin references https://www.youtube.com/watch?v=9dfWzp7rYR4 I love penguins and every time I watch this clip it makes me happy so I wanted to share it. It was an april fool's joke on the bbc a couple of years ago, and when I first saw it I said to David "Come and have a look at this, it can't be true they've found flying penguins surely..?" at which of course he shook is head and grunted something. The compositing is really good, this video gives you an insight into how they did it https://www.youtube.com/watch?v=lzhDsojoqk8&NR=1