Some chap, not me, has figured out that the Motorola Multimedia Dock has a magnet in it which activates 'multimedia mode' on the Motorla Droid / Milestone Android devices, and guess what? it works!
Just put a magnet to the back of the device in the top left corner, like in the image below and it instantly says 'Multimedia Dock Connected', queue lots of cheap cardboard homebrew docs. You can even use your $$$$ phone as a digital picture frame.
Alternatively download DockRunner from the Android Market.