Robert Cohen is a vegan original. Brilliant, hardcare animal rights, & one of the 1st to publish and speak out loud about the dangers of drinking cow milk. 
His daily "notmilk" column inspired me to go vegan (pus cells), start the largest vegan Yahoo Group (The Mad Cowboy Newsletter), start one of the 1st vegan blogs (this one), and write the first vegan pizza cookbook. How wonderful that he gets two sessions with Dr. Don. Here's the link to the audio stream as well as a downloadable mp3. Robert has to be heard.
Also, a few weeks ago, I did a radio broadcast with Dr. Don on "Natural Disaster Preparedness," also touching on the vegan perspective of same. We talked little about my book and, imho, there's a lot of useful information and tips for people. At the time of the broadcast, I was snowed in! 
Here's a link to the audio stream and downloadable mp3.
Finally, glom the rest of Dr. Don's archives. He's interviewed some of the best, ever, regarding living a truly healthy life. Campbell, Esselstyn, Barnard, McDougall, Klapper, cookbook authors galore, and more.