I hate to say it, but handheld application development on Windows Mobile (using VS2005) is actually quite good (comparatively speaking). Deploying and testing to a Windows Mobile handset is seamless and tightly integrated. But thats what you get when you have propriety development environment and mobile platform designed specifically to talk together.

Android is platform and dev environment agnostic which is impressive given how feature rich the API is. And it should be possible to become language agnostic too, if a compiler can be created to compile code down to the native Dalvik byte code used by the Android VM.

I think Google needs to get on the ball and create compilers for other languages if they expect to attract developers who really matter - hackers.