Project TOPLESS is working towards OLED lighting, and have recently made a few Polymer-OLED desk lamp prototypes. The OLED lamps have five 2" P-OLED panels, each requiring 0.7W (the total power input is 3.5Watts - 5V dc @ 0.7amps).
You can see in the video that the power switch is located in the lower left hand corner of the Z-arm, and it is activated when moving from the horizontal position. Towards the end of the video you can see a comparison of color rendering under fluorescent and OLED lighting conditions.
TOPLESS (Thin Organic Polymeric Light Emitting Semi-conductor Surfaces) objectives include an efficacy of 20Lm/w, color temperature suitable for general white light applications and large single-pixel devices. TOPLESS will run till February 2010. They are working currently on improving the lamp's quality. If all goes well, the project hopes to start a pre-production OLED lighting line in the UK, making several thousands panels by the end of 2011.