(Thanks to NoCamels) In the “always-on” world of mobile phones, this handy Israeli application will inform your friends, family, customers etc. why you cannot answer their call. If your smartphone seems to be almost surgically attached to your body, BeeZee could really change your life.
http://nocamels.com/2012/07/beezee-automated-phone-messages-when-you-cant-answer/
http://www.youtube.com/watch?v=ERy5GwgXcRY&feature=player_embedded