Drop by
Voodoo Doughnuts in Portland, any time of night you visit. The link I provided takes you to their menu, which has some crazy options. They also have some great doughnuts and some weird ones, such as the Cock-n-Balls:
http://voodoodoughnut.com/doughnuts/cock_balls.jpg
Highly recommended. It's in downtown, not too far off I-5 if you're looking for something to break up the drive.
The last time I was there it was Portland's Annual Midnight Naked Run, and we passed a handful of naked people on the way there (even some cute chicks). It was a good time.