The group of interns over at TriMet (of which I am a member) is beginning to make edits around the Portland, OR metro area to prepare it for TriMet's upcoming OSM-based multimodal trip planner.
You can search for things we've edited with the tag "RLIS:reviewed=no" and "CCGIS:reviewed=no". RLIS stands for the Portland Metro Regional Land Information System, while CCGIS stands for the Clark County GIS department. These are our primary data sources.
I'll be working mostly in Clark County from now on, so let me know if you do a lot of OSM work in that area or have any questions.