Francesco Orrù has sculpted and 3D printed a very well known helmet from the Blizzard games universe. This wearable Lich King helmet from World of Warcraft was sculpted by Orrù entirely from scratch in ZBrush starting from a dynamesh sphere. The model required being split into fourteen separate parts in order to be 3D printed. It took four full days to design and render the helmet with an additional 90 hours to 3D print all the parts.
You can read more about the process in detail at 3Ders.org