There have been a lot of successful 'ports' of Android on Windows Mobile devices, like the Touch Pro2. These projects involve getting a linux bootloader to run (haret.exe) so that Android, or any other Linux-based OS, can boot. Over at XDA, they've been working feverishly to get Android working on the HTC HD2, and have made a lot of progress. Case and point, the developers behind the HTC Linux Twitter account have just posted an image of an HD2 running Ubuntu, which, like Android, is a Linux-based operating system. They even managed to connect a mouse and keyboard, seen below. This is a good sign!
