Female Metal Band Members... Who Aren't The Singers?

I got inspired to ask this Q while I was watching the Blackguard music
video for the song "Firefight" and I noticed that the drummer for the
band was a woman.

http://www.youtube.com/watch?v=CsWYBWqviqIfeature=related

now, I know plenty of bands with Female singers (I counted recently,
and on my computer music library I have over 180)

so, MQ: what are your favourite bands with a woman filling a position,
other than vocalist? (It still counts if they play an instrument as
well as sing, such as Kaizer Von Loopy from Hanzel Und Gretyl)

MQ2: what are your favourite all-female bands?