The Ultimaker is a large build volume (210x210x220mm), open source 3D printer that is reliable, fast and affordable. It is designed for easy assembly and long, trouble-free printing.
On their blog Ultimaker proudly presented the first shipments of their product.
If one is interested in using and/or improving the open source Ultimaker, go to their wiki.
Want to know the actual status of Ultimakers users or to be users in the world, visit this Google map.