Before the Thunderbolt was released, a multimedia charging dock was described which would hold the Thunderbolt in landscape at a slight angle and would charge both the Thunderbolt and a spare battery.

http://pocketnow.com/android/verizon-thunderbolt-extended-battery-multimedia-dock-etc

I wanted one but it's vanished from the Verizon site! Does anyone have any idea if it will ever reappear or did HTC/Verizon kill it?