Kojishinsa’s dual-screen netbook was the first “dual-screen” notebook – while extremely expensive, it set an extremely interesting precedent. The 1k5 box showed that it is possible to add more than one screen into a notebook…and GScreen now follows suite.
The picture below shows their 17 inch SpaceBook:

Specs-wise, the device es extremely powerful:
Dual 17.3-inch LED-backlit display screens
Intel® Core™ i7- 620M 4M Cache 2.66 Ghz Processor
Genuine Windows® 7 Professional
Hard Drive 320-500 SATA HDD 7200rpm
Memory: 4GB DDR3
Video: 1GB NVIDIA® GeForce® GTS 150M GPU
Hard drive. 250G-500 . Support SATA II HDD.1 x 2.5” (9.5mm) HDD, 7200rpm
Optical drive: DVD dual (DVD + / -rw) , super multi (DVD + / -rw + DVD- RAM) .
Communication
Intel pro / wireless (802. 11b / g / n) network connection.
6-in-1 media card reader: SD / MMC / MS / MS Pro/MiniSD/RS-MMC Memory Card
Bluetooth 2.1+EDR
Speaker: Build-in speakers,1.5W. I/ O.
1 x DC-in jack
1 x HeadPhone out(with S/PDIF)
1 x Mic-in
1 x RJ45 LAN (w/ metal shielding)
1 x RJ11 Modem connector
3 x USB 2.0 ports
1 x eSATA (+USB)
1 x IEEE Firewire
1 x HDMI
1 x MMC/SD/MS/MS Pro memory card slot
Battery: 9 Cell, li-ion.
Packing accessories:
Support CD (driver, utility, manual) , ac adapter, power cord, battery pack.
1-Year Basic Limited Warranty
100% North American Sales and Tech support for all gScreen laptop computers sold in North America
Further information on this 3000$ unit can be had at the URL below:
http://www.gscreencorp.com/