So I'm looking at my playlists by year on the iPod, and I see that I've only gone back to 1992. I could probably fill out a couple of years before that, but not many, so I hit the iTunes store and start going through all of the 80's charts.
Before I know it, I have about $90 worth of songs in my cart, going back to 1981 or so. That's a lot of freakin' music. I'd love to buy it all, but that's a lot of money. Of course, the flip side is that CD compilations rarely have any of the "right" songs, and buying CD's would be more expensive anyway, but still.