"Mad As Hell" by Aaron Leming. I did a little bit of research. Apparently, this kind of letter working is an example of kinetic typography. The actual text was taken from the 1976 cult film "network".
I ran into this clip today, or rather, it ran in to me. Listening to it, I felt like being set free. I was so amazed at the feeling that I just had to laugh out loud. So far, I have not stuck my head of the window and yelled, but the idea is growing on me.