I downloaded some of the "top hits of the xx's" collections a few years ago and then deleted all the songs that I didn't like. By far the biggest collection after all my pruning was the 80's. Of course an element of that for the 90's and 2000's was that I can't stand much rap (so "funky name #1 feat. funky name #2" is an almost certain delete), and rap came to make up more and more of the top hits in the later years.
ETA: I also like music from the 30's and 40's, but the prize of my collection is the Ethel Merman Disco Album, which I inflict on friends as possibly the worst music ever recorded.
Edited to add a sample song.
[yt]http://www.youtube.com/watch?v=inzhNkQENOs[/yt]
Play it and see how fast you jab knitting needles in your ears. I'm betting 40 seconds or less.