Panic... Simulate a kernel panic. Press Command-Q to exit and commmand-comma to change the animation time.
You can change keyboard shortcuts in System Preferences. The menu items are "Quit Panic" and "Panic Preferences".
There is also a Blue Screen of Death mode.
There is a known issue in which command-Q may not quit the application. If this happens, press the Exposé key on your keyboard and select another application. Then quit Panic from the Dock.
Panic by Benjamin Dobson is licensed under a Creative Commons Attribution 2.0 UK: England & Wales License.