Sc3gzr is a project mainly written in PERL and SCALA, it's free.
Interactive, gamepad-controlled, real-time text manipulation
sc3gzr Gamepad Controlled Real-time Text Stream Filtering with Audio Feedback
Perl/Supercollider Requires Perl modules Linux::Joystick and Net::OpenSoundControl
More information can be found at http://t.dnlr.net/articles/sc3gzr.html
Photos from installation for The Ups & Downs (curated by Mathew Timmons) at Marmion Way, Los Angeles (November 13, 2008) can be found at http://www.flickr.com/photos/dan-richert/sets/72157623237796157/