Welcome, and you wont find any bashing here.
One thing I use quite often is the Blackberry messanger. It uses the PIN from your blackberry to chat with other blackberry users.
Also, I would download the plazmic theme reader, and browse around the themes, you can change the look and feel of the blckberry screens by loading different themes.
There are a ton of other utilities, games, etc out there. What types of things would you be looking to do?