As a youngster, I have vivid memories of tuning in "The Doctor Demento Show" show on my little transister radio. I believe it was on Sunday nights on CHUMFM at 20:00 and I was there every week.
There is now a web site hosting over 90% of the past Doctor Demento shows. Take 1987 for example. Available right now is the profile on Spike Jones, the overview of bubblegum music, the show on Groucho Marx and more.
Where would we be without the web? MP3s of the radio shows from my youth at my fingertips. It's awesome.