What? Finder crashed?

It's rare, but as I've discovered when using Microsoft products on a Mac, it is possible to crash parts of the OS. I've written a quick tech note on the command line way to recover without a reboot. (After all, OSX is UNIX!)...

If Finder crashed, giving you a beach ball over a disk window:
sudo killall -KILL Finder

If the dock crashed:
sudo killall -KILL Dock

The menubar (where the clock, batter indicator, and so on live) crashed:
killall -KILL SystemUIServer