Do you have a favourite TED talk?

I’ve started listening to a TED Talk (or similar audio/visual content) as one of the first things I do for the day. I’ve particularly enjoyed Tim Urban’s ‘Inside the mind of a master procrastinator’ and Morgan Spurlock’s ‘The greatest TED Talk ever sold’. I listened to one about how they’re treating pancreatic cancer that was interesting to me too. There are lots of others I’ve enjoyed, but those are some I’ve listened to recently.

Do you have a favourite TED Talk? Doesn’t have to be a TED Talk, it can be from a different site, but something you’ve listened to or watched that’s made you laugh, inspired you or made you think.