Some CDs I've "hated".. well.. Some that has disappointed me, which I've thought I've not liked, and because of that, not really listened to in a very long time, more or less since they were new. It's not exactly like you take that out, the first thing, when you want to listen to something. To my surprise, I've liked a lot of those, and selected way more songs from those then expected..
On the other hand, CDs I've liked once upon a time, even if not big favorites, often sounds kinda boring. The kind of CDs I know I've listen a lot to, when they were new, but not as much since, more often than not disappoints now.. and I end up only ripping a few tracks out of them.. 1 or 2 tracks, maybe..