See what you can create with 140 characters of JavaScript and a canvas
Well, I have done just about all I can to do to make the Matrix digital rain, but I am sadly 100 bytes over. I am out of time to kill, but if you aren't, please take this off of my hands. :)  with(x)for(fillStyle="#000",fillRect(0,0,1e4,1e4),font="32px m",i=0;1920>i;i+=32)for(j=0,a=((2166136261*i^16777619)+960*t)%2160;b=255*(32>a-j),1080>j&&j