A simple application switcher/launcher that can be used with a controller (only tested with a Xbox 360 wired).
To launch/switch to an aplication, press 'A'. To kill a running application, press 'B'.
To launch an application that is pinned to your task bar, press the left trigger, and select the application with the left stick and 'A'.
To restart or shutdown the system, or exit the task switcher, use the right trigger.