Your chances for any response would be better if you posted on the Oregon board. Be patient, the board is very slow. Go through pages of old posts to see if there are recommendations that have been mentioned before.
P.S. I am from Oregon too, but not the Portland area, sorry!
Re: Portland, Oregon DJ Recommendation
September 2011 Siggy Challenge- Favorite Ceremony Photo
P.S. I am from Oregon too, but not the Portland area, sorry!
http://forums.theknot.com/Sites/theknot/Pages/Main.aspx/local-wedding-boards_oregon
http://www.chooseyourdj.com/Ultimate_Entertainment/Home.html
Also, look into BAM (Bust A Move)
http://bustamovedjservice.com/