Oh, how I love a Dutch bike. The riding experience is really much different than many of the city/commuter bikes that are available at your neighborhood bike shop. I got used to riding upright bikes when I lived in Holland, and now nothing else feels right.
The selection here is my wishlist – one of these will be mine this year. (Note that the Hollandia frame that is so inexpensive is a single speed – it will need a new rear wheel and shifters, and a 3 or 8 internal hub added to it; with labor, likely another $400-$500.