Zia was the spot when I was young for all my music needs. Now that they have expanded, it's really become the spot for anything as far as entertainment. They carry a great selection of books, dvds, games.
I find their prices to be fair, some times a little bit high. But you can find a good deal if you look around. Their trade in credit is usually fair, some times low, but the selection of cool things kind of makes up for it.
Lately they've really started to carry a little bit more vintage electronics, which is awesome. With two locations pretty close to each other and right off the freeway AND open until midnight, this is a great place to shop.
Definitely recommend stopping here!