Presumably you could lift that out of Android and hack it into a regular Linux system. Granted, it's probably better integrated with Android, though.
The problem with running "other code" (Open Office, for example), is that all graphics have to go through the Android interface - the whole GUI is done with Java/Dalvik. That might make it difficult to integrate other programs.
how about a version of OpenOffice with phone features, such as teleconference for presentations (yeah, crazy thought, but you get the idea)?