Yeah, they've been putting more and more of them in around the Seattle area, but they are the much more simple type. People here are so timid though that they get up to it and freeze. In order for a roundabout to work you need to be attentive, quick, and decisive...otherwise there's not much hope of getting anywhere.

This one pictured looks scary at first, but then it becomes pretty clear. Most of the confusion comes with trying to adjust to driving on the left side of the road though.