For what it's worth, I read about this on Ars. The good news is that there seems to be official Canonical support behind at least some of the efforts so, if done right, this could get mainstream real fast.

http://arstechnica.com/open-source/n...-on-ubuntu.ars

Android's sophisticated interprocess communication system, which is called Binder, requires a special kernel driver in order to run properly. The driver is in the kernel staging tree and is not enabled—a problematic impediment for the Android execution environment developers. Their current prototype is using a temporary workaround to bypass Binder, but they hope that the necessary patches can be enabled in the kernel for the next Ubuntu release so that the execution environment can work properly.

The developers have built a working prototype of the execution environment. They successfully compiled it against Ubuntu's libc instead of Android's custom libc and they are running it on a regular Ubuntu kernel. They intend to cut out Android-specific components that are not needed to make the software run on Ubuntu.