This is a couple of years old but well worth seeing/listening:
Symphony for Dot Matrix Printers - [The User]
I saw a performance of this about three years ago. It was really quite something. A lineup of old dot-matrix printers ratcheting away in a totally controlled way. Each printer had a camera trained on it and part of th eperformance was also the rythmic switching of camera views on large overhead projections.
Grab the MP3s. Well worth it.
