A new commuter rail was just opened up (2/09) in the "West Side" of the Portland Metro Area, and already has a Wiki page:

http://en.wikipedia.org/wiki/Westside_Express_Service

I'll never use it because there's nothing in the "West Side" that I need to see...yo, but I'm still traumatized by driving on parallel highways to same way back when...way back when the traffic was nightmarish, and if I had a choice, I would go to trimet.com and organize a car-less, and less-stressful trip using this new-fangled train to get me closer to home...