I second your enthusiasm, Harold, and also find the TED site a great resource. I'm nudging myself to view talks even if the subject doesn't immediately appeal to me -- Usually I can spare the 20 minutes, and often I hear things I wouldn't have otherwise.

I've also had a thank-you from everyone to whom I've sent a link for Hans Rosling's talk, so I get vicarious credit for the quality of his presentation. Not just anyone makes a comparison between Swedish professors and chimpanzees.