Cmatrix is one of those utterly useless programs - that does nothing else than running matrix code in your terminal
If you combine it with tmux you can make it look pretty cool and definitely impress your friends with your extreme computer coolnes.
And maybe it is not useless - image is everything
Manjaro 64bit on the main box -Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz and nVidia Corporation GT200b [GeForce GTX 275] (rev a1. + Centos on the server - Arch on the laptop. "There are no stupid questions - Only stupid answers!"