I think this video of philosopher Julian Baggini falls into the category of a TED's Greatest Hits. They posted it this weekend on the Editors' Blog, which is where they generally highlight their best or most popular videos.

Is there a real you? Julian Baggini on TED.com

What makes you, you? Is it how you think of yourself, how others think of you, or something else entirely? At TEDxYouth@Manchester, Julian Baggini draws from philosophy and neuroscience to give a surprising answer. (Recorded at TEDxYouth@Manchester, August 2011, in Miami Beach, Florida. Duration: 12:14)

Watch Julian Baggini’s talk on TED.com, where you can download it, rate it, comment on it and find other talks and performances from our archive of 1,000+ TEDTalks.