Reddit, what are your favourite TEDTalks?

Related: <a href="http://news.ycombinator.com/item?id=442022" rel="nofollow">http://news.ycombinator.com/item?id=442022</a> - Ask HN: What is your favorite TED talk? (644 days ago) <a href="http://news.ycombinator.com/item?id=1447418" rel="nofollow">http://news.ycombinator.com/item?id=1447418</a> - Ask HN: What's your favorite TED Talk? (128 days)