[Matt Navarre's musings]

Apple Store - 700 SW 4th
About a 10 minute walk away, in the Pioneer Place mall, lower level. Next to the food court.

Powell's Books - 1005 W Burnside
1 block north of the Ace, you can see it from the hotel. The largest book store on earth (the real kind, not the Amazon.com kind)
It's an experience just to go there, highly recommended. They also have toys, journals, a rare book room, a coffee shop, and a few books.

Pro Photo Supply - 1112 NW 19th
About a 15 minute walk, a great store that serves all the serious photographers. This is not Camera World. Though there's a camera world too, much closer to hotel

Pro Guitar Shop - 1100 NW Glisan
About 5 minutes North of the hotel on 11th. A great store with the largest collection of effect pedals I've ever seen.

The Pioneer place mall also has a Nordstrom, Macy's and tons of Mall stores like Bose and such. There is not a Radio Shack there if you need a cable or something though.