TheDoctorDementoShow.com includes an archive of audio for 1,275 complete episodes (issues?) of The Doctor Demento Show, as far back as 1972 and as recent as 2005. (Thanks, Jerry.)

It appears the site maintainer has put heavy restrictions on access to prevent people from slurping the massive amount of content on the site. While I sympathize with any admin coping with the bandwidth burden of a popular web site, I don't see how you can put this kind of material online and expect fans not to try and collect it. It's valuable; it's digital; it is offered in the spirit of collection, openness and sharing; it's available now, and it may not be available later (for legal, physical, or mortal reasons). Forgiving the legal grayness of abandonware, this is what BitTorrent is for.

Still, woo!