The one on loan to the Evergreen Air and Space Museum in McMinnville OR is fantastic. (
http://www.sprucegoose.com/ ) On Father's Day a few years ago, they had a panel of pilots and ground crew who told stories. The best part of the display is the ability to walk up to it and look. At one point, they had a small platform next to it so you could look inside the cockpit. My 230 lb frame wouldn't fit in one.