Force-closing an SSH connection

On occasion when I'm using SSH to connect to a remote server, I run an application that hangs. If the terminal's running inside a GUI, you can always close down the entire terminal and restart it, but there's an easier way: hit Enter, then type "~." (squiggle dot) That force-closes the SSH session leaving your terminal intact. I learned this from SuperUser:

https://superuser.com/q/467398