Looking for anime series with great music/OST

I find that animes only have a few tracks worth listening to and you'll find yourself skipping until you find a specific one that you might have heard in the series. Eureka seven has tons of great tracks but since I'm not into the whole trance techno theme I just skip the cd thats dedicated to that.
I think death note has an awesome soundtrack, it has great themes and I only skipped like 3 songs.
I recently got into one piece and I love some of the more orchestrated tracks, i think one of them is called to the grand line.
Black Cat's OSt and Tengen toppa are also good cause they have some more rockish tracks and also some mellow suttle ones which are nice to listen to.

Jam it back in, in the dark.