Yes, one of the reasons MLC selected Google Apps is because it supports mobile access on BlackBerry, iPhone, Windows Mobile and Android devices. It is all part of putting "MLC Within Reach". For information on getting Google Apps on your device, see Mobile Users.
Yes. BlackBerry users can download the BlackBerry sync tool from the Google Mobile Support site.
Yes, you can enable mobile notifications in Google Calendar (U.S. only). For details, see the Google Help Center .