It is the most highly downloaded video on iTunes U and is available for free (crappy quality though) so I downloaded it.
I'd read it, heard it and watched it in the past too. At that time, I hadn't quite understood the meaning of that particular phrase. But this time, it hit me. It was insightful. It made an impact on me so it had to be there in the signature.
I'm glad to know you've heard it too. Great going, uncle.
(For the uninitiated, we are talking about Steve Jobs. He was recently honoured with a doctorate by Stanford University and this was his commencement speech. Inspiring stuff. If you wish to do so, you can
grab it here for free. You'll need iTunes installed for this link to work.)