Script Kitty has actually been around for a while, but after receiving its 2.0 update last week, it's now a serious contender for one of those must-have apps (at least for anyone with an ssh-enabled server). I downloaded and set it up in a matter of a few minutes (including generating an RSA key for key-based auth and adding said key to a few Linux servers), and now have a stupid easy way of doing certain things very quickly without having to even resort to ConnectBot.
If you like to spend your free time hacking around on your Android device, you've no doubt felt the sting of switching back and forth from the terminal. Now with AirTerm you can leave the terminal floating on top of whatever you're doing. This app comes from the same folks that brought you OverSkeen and AirCalc.
This is a true floating window that you can move, resize, and minimize while you work.