Alright I'll bite. Problem is, out of the three bands in my collection that I commonly cite as obscure, one was mentioned recently by someone else in the metal thread, and I mentioned another in response to that. Still, here's one band people might not have heard of.
Witchbreed are a metal band from Portugal whose first album was a genuinely refreshing take on the whole female-fronted Gothic Metal rigamarole, with some strong progressive elements, Death Metal and Black Metal influences in the instruments, and a unique aggressiveness to the clean female vocals. They've unfortunately lost their singer and seem to be having difficulty finding a suitable replacement.