Is there a library to show your keystrokes interactively?

[Marcin Borkowski]

Hi all,

I was wondering whether there exists something like
http://code.google.com/p/key-mon/ for Emacs.  Basically, I'd like an
"interactive view-lossage": an (inactive) window or frame showing all
keypresses.  (Obvious use case: screencasts & teaching Emacs;).)

Best,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Adam Mickiewicz University