Nokia N900: The highest SAR value reported under this standard during product certification for use at the ear is 0.92 W/kg and when properly worn on the body is 0.82 W/kg (Nokia Source)

Thank you baksiidaa for your interesting post! I always try to explain the (non-)problem to non-scientific people using the analogy of light: A cell tower has a "big lamp", the mobile phones have "small lamps" signalling to the tower. This aren't floodlights, but only very small "LEDs" :-)