Here's something fun to do in Linux:
Start up an Eterm (or your favourite terminal emulator in X). Type some text to make sure it works. Hit ctrl+S. Then type more text. No more text.
^S seems to be the escape for scroll lock. But once you type ^S, you can't type ^S again to disable it. In console mode, ^S actually lights the scroll lock LED. Hitting the scroll lock button in that case will restore your input capabilities.
Anyone out there who is more enlightened than I want to explain this? Are my Eterms unrecoverable in this state?
Will our hero survive this time?!