There are quite a few intimate venues to see a show while in Portland including the Crystal Ballroom, the Doug Fir Lounge", the LaurelThirst Public House", and Kelly's Olympian among many others. I made it to one of these special venues, Wonder Ballroom, while in Portland. I saw the Wallflowers, which was an absolutely amazing show! A group from Brooklyn, The Picture opened up for the Wallflowers. They had a really great sound...and weren't too bad to look at either :) On their myspace page, you can listen to some of their songs, and their album, Bluebirds, can also be purchased on itunes. ("Devious" is a great tune.) Because the venue was so small, I was within 10 feet of the stage, and had an amazing time. Here are some images from the Wonder Ballroom site...
View of the stage
View to the back balcony where there is seats and another bar
128 NE Russell