ConnectBot SSH Client - This is a secure shell program for the Android platform. Its ultimate goal is to create a secure connection through which you can use a shell on a remote machine and transfer files back and forth to your phone
GravityRinger this is a program which silences your phone based on the pitch the phone makes.
For example: I want my phone to be silenced when I put it upside down in my pants. I'll automagically go from audibly ringing to vibrate only when it's upside down for a couple of secs