iPhone like UI on Android

I wrote a quite a few iPhone apps last year. Now all those clients who have had their iPhone app on the App Store now want the same thing for android. I mean the "Same Thing". It is not a hidden fact that the Android UI is far from good for user experience. Yes there is multitouch and stuff, but when it comes to navigation, there is the Activity class and the Back button. Now either I convince the clients that they can't get the same experience on the Android as an iPhone or I do something about it. Hmm.... interesting thought.