Jacknife has an amazing collection of tapes, vinyl, and used gear like stereos and tape decks. The quality is top notch, and if you can't find something out on the floor, chances are they'll have it in the back. If you see Trevor, tell him I sent you.
It's site says it's "A Friendly Store For Friendly People," and this is completely true. They throw fun parties in the back, and have a sick collection of clothes, housewares, and other goodies.
This is a great place to walk around. It really feels like a mini Lake Shasta or something tucked right up in the Hollywood Hills. Ornate statues on the bridge and sweet smelling trees. If you squint you almost feel like you're not in the middle of a massive city.