Heh, in other words, the name worked for Mellancamp so why shouldn't it work for me!

Whoah, that didn't even cross my mind. You're quick on your toes with your thinking. But, no, I don't think that's the idea behind it. It probably didn't cross Doughty's mind either. It just ...

Why does it say Piscataway at the end?

hahaha The Mike Doughty HQ always close their letters in a non-traditional matter. So, "Piscataway" used in this context would be a substitution for say like "Sincerely" or whathaveyou. I think ...

that would be...dirivitive.

I think you mean "derivative." And, that still would be a negatory on that, Mister I-Think-I-Am-An-Etymologist. Substitution would be much more appropiate to say, since "Piscataway" does not in f...