Like Soundscapes, Rotate This is an excellent store for finding music you usually won't find in "regular" CD shops. Where Soundscapes seems to cater towards the indie scene, my experience with Rotate has been that it's more of a punk or metal CD store. Of course, it's not exclusively that, but it unavoidably caters towards a certain crowd.
Hey also sell concert tickets, lists of which can be found in store and on their website. It's only a $1 service charge, and that's always nice. I think the concert tickets are cash only, but I may be wrong.