I just read this article on CIO.com about the best BlackBerry shortcuts. It’s a pretty big list, 39 total. Here are the 20 that I found most useful and I hope you find them useful as well:

Typing Shortcuts

1. To capitalize a letter with one click, hold down the letter key.
2. To insert a period, click the Space key twice.
3. Turn CAP Lock on by pressing the ALT key followed by the right Shift key. Turn it off by pressing either Shift key.
4. Turn Number Lock on by pressing the ALT key followed by the left Shift key. Turn it off by pressing either Shift key.
5. Type an accented letter or special character by holding the corresponding letter and scrolling left or right with the trackball.

Messaging Shortcuts

1. In e-mail inbox, press the S key to search for a sender or a word within a subject line, and any mail folder regardless of message was sent or received.
2. Within inbox, access the complete list of messages sent by hitting the ALT key followed by the O key.
3. Within inbox, access the complete list of messages received by hitting the ALT key followed by the I key.
4. Within inbox, access the complete list of SMS text messages received by hitting the ALT key followed by the S key.
5. Within inbox, access phone log by hitting the ALT key followed by the P key.
6. Within inbox, access voicemail log by hitting the ALT key followed by the V key.
7. When reading a message, press N to go to the next message, press P to go to the previous message.
8. Within inbox or when reading a message, press T to go to the top of the page, B to go to the bottom of the page, Space key to go to the next page, Shift + Space to go to the previous page.

BlackBerry Browser Shortcuts

1. Bring up the Enter Web Address field from any Web page by pressing the G key.
2. Insert a period in Web address by clicking the Space key.
3. Add an item to bookmarks list by clicking the A key.
4. Bring up your bookmark list by clicking the K key.
5. Refresh a Web page by clicking the R key.
6. Open browser options with the O key.

BlackBerry Acting Up

1. If your BlackBerry slows down, starts malfunctioning or freezing, always try removing the battery and SIM card–if the device has one–and waiting a few seconds before reinserting it.

I should probably add this list to our corporate wiki tomorrow :).