Oh, and if you are in Ballard there is always Bop Street records located in the historic district (they can tell you the exact address at Sonic Boom). Not my favorite place by any means, but if you have some time might be worth checking out. Just be prepared to haggle on all pirces and spend some time in their huge, unorganized basement.
Again, not a destination... but if you have the time, then check it out. There are some pretty cool bars and restaurants in that area as well.