We just put up an add on Craigslist looking for a roommate starting Sept. 2008. Our house is a 4br 2ba and is just north of UW. Rent is $475 plus utilities of about $75 per month. All three of us are super chill and we all ski, so there will be plentiful rides up to the mountain next year.
Here is the craigslist ad for more details if anyone is interested. http://seattle.craigslist.org/see/roo/672079840.html