Here's a video of a first-gen iPhone running Android. PlanetBeing starts by navigating around the iPhone OS, then powers it off and then boots off of Android.
The startup takes about a minute, but he is able to navigate the menu and use the browser. It does seem a bit clunky, but being that this is an early build, it's some impressive work.
Here's to hoping it hits a release quality soon; there are some cool Android apps out there. Also worth noting, is the reflection off the screen shows that he is filming it with another iPhone.