So here's an interesting little idea. I think I've created the best playlist ever, and it'd be fun to see what other people think of it. If you use iTunes, I can almost guarantee you'll like it, even though I have no idea what kind of music you listen to. This playlist is "smart" (a smart playlist in iTunes). Really a smart playlist is just a filter. The contents of the playlist are the results of the filter placed on your music library. Each person has their own library of songs that this filter is applied to. So the playlist has your own unique set of songs because the playlist is based on your iTunes library. Ok, so by default, this smart playlist is based on your musical tastes. That increases the chance that you'll like it. But, the meat of this, is the filter itself. It shows you music that you haven't listened to recently, but that you have liked in the past. Listening to this playlist on my computer brings up music that I've almost forgotten about, haven't listened to in a while, but have really enjoyed in the past.
Try it for yourself! Depending on how you rank your music, you might have to adjust your rating to more or fewer stars, and your play count may have to go up or down a bit depending on your listening habits.