For any BlackBerry user, check out the free application to add an calendar item or task from an e-mail or from the phone menu. Its been around for a while. Provides the following options from the "berry" menu.
The website is: http://soundslikeobiwan.com/~roger/OntoCalendar/Code:Onto Calendar... Onto Task...
From there, you can do a over the air (OTA) install onto your BlackBerry. I'm using the beta without any issues.