Come with an empty stomach. The food scene in Portland is pretty major, with stops for any craving. UFO Pizza is popular for its pie, and we've heard rumors that it hosts a weekly meeting of flying-saucer enthusiasts.
For something sweeter, try Voodoo Doughnuts for flavors like Arnold Palmer and Butterfinger, and stop off for a lunch or coffee at St. Honor & Boulangerie, said to be Oregon's portal to an afternoon in Paris.