I tried tmux earlier today and found a very nice feature:
I have an SSH session to a remote linux server from my computer, then connect a new SSH session from my BlackBerry, and run 'tmux attach' in it.
The tmux session on the computer resizes to the size of the BlackBerry terminal, and both PuTTY and BBSSH show the same content, and both can interact with it.
Disconnect the BB, and the computer terminal resizes back to what it was.
I do the same from my Android phone (using ConnectBot): I can run some long-running process and keep an eye on it while I'm out in the kitchen making a cup of tea. When I'm back in the office, I detach the Android session.
I have an SSH session to a remote linux server from my computer, then connect a new SSH session from my BlackBerry, and run 'tmux attach' in it.
The tmux session on the computer resizes to the size of the BlackBerry terminal, and both PuTTY and BBSSH show the same content, and both can interact with it.
Disconnect the BB, and the computer terminal resizes back to what it was.