I just found this and tried a couple simple ones so far and it works flawlessly. For those that use Tasker, you can download a plugin called Tasker App Factory (free). It allows you to export a Tasker profile as an App you can then install and run separately. For example, I wanted to be able to turn on bluetooth in my car without touching the phone. So I made a simple profile with action to turn bluetooth on, exported it with App Factory, and installed it as an app. Now I can say "Ok Google Now, open Bluetooth On" and voila! Tip: Use a "back" or "go home" action at the end of your profile to have the phone exit Google Now once done.