Of course, if you want to push the envelope and stress-test your piano,
there is always the Circus Galop by Marc-André Hamelin:

  http://www.youtube.com/watch?v=9xbkovCQMmc
 (has a link to the MIDI
  file at http://rapidshare.com/files/242621317/circusgalop.mid )

Marc Kaufman

 [ More at http://en.wikipedia.org/wiki/Circus_Galop  including
 [ source of piano rolls.  -- Robbie