I have:

Gmail
Google Maps
Opera Mini

What do I need?

I can't live without Google Maps and Beyond411.

And Brickbreaker when I'm REALLY bored.

Well, I don't NEED any of those, although I have Google Maps. Why don't you tell us what you want to accomplish?

Honestly, I'm new to BB, so I'm unsure what I want to accomplish. Maybe everyone listing their most used/favorite app would be ideal.

my telnet client to my linux box <3

BB alerts is a must have for me, that is if you want to get a message notification after an event like voice mail, email, sms, messages, etc. The only flaw of the blackberry i have found yet.

games,

you have got to have games for those long, boring meetings where the boss is discussing overhead, cost cutting efforts and "manning". That way it looks like your paying attention, taking notes, and lightyear ahead of your coworkers.

Just don't shout out when you finish your Genius Sudoku in record time and you too will have the possibility of having 4 people working directly under you.