Since HP made its decision to -ahem- streamline their inventory of Touchpads via fire sale, Android users have been clamoring for the ability to run Google's mobile OS on the inexpensive (yet powerful) tablet.
This, of course, led to fierce competition between developers to be the first to get Android running on the Touchpad. The competition really heated up after Hack N Mod offered a bounty to the first developers able to get Android working on HP's previously doomed device.
In the beginning, there were two primary teams working on developing a touchpad-friendly version of Android: Touchdroid and CyanogenMod. When the first video of CM7 successfully booting on the Touchpad surfaced, it was big news, despite the fact that next to nothing worked (not even the touch screen).