I know this might probably be out-of-scope of your media bar but it's worth a shot.

Just a few days ago I was commenting with a friend that the #1 reason why I have to open the keyboard on my N900 is to ctrl+backspace (aka alt-tab) away.

Would it be possible to use the proximity sensor to trigger this? It would be so awesome to not keep having to open the keyboard when I just want to switch between fullscreen apps.

Finally, thanks for all your hard work on maemo. It feels like you're breathing new life into a platform everyone else is already declaring as dead.