How did I find the thread? I was just relaxing with some stream of consciousness web surfing back on 9/24/11, paying bills and checking mail & news & vids & obscure stray thoughts, when Some Synapse Switched on the Song and it wouldn't stop until I tracked it down! So I started searching and...
If you are still looking 5 years later it's "Monkey on Your Back" by Aldo Nova. Yeah it kept popping into my mind from time to time -- I remember the video being a little shocking at the time, especially the middle verse with the girl becoming a junkie prostitute and the monkey baring its fangs...