This is just insanely cool.

NerdTV.   Download. Watch. For Free! 

PBS should really get a lot of kudos for doing this - esp. in the face of the RIAA, and all the controversy concerning media downloads, etc. Each show is released under the Creative Commons license so you can download, share, even re-edit the show to your liking!  They even have a podcast version if you just want to listen.

The first interview is Andy Hertzfeld, the original Macintosh systems programmer.