Alot of BlackBerry Users probaly use these shortcuts on a regular basis, but for those who find this useful; Enjoy!
When entering your Phone Number into an Email, Calendar Event Notes, Memo Pad, Tasks or pretty much anything you enter information into on your BlackBerry, you can always use these shortcuts. All you have to do is type in mynumber then hit the space key and your phone number will now be displayed.
When you need to know your PIN number or need to send it to someone its pretty much the same process. Type in mypin then hit the space key and your PIN number will now be displayed.