Lots of diverse shit here dude, nice list. I totally agree with you on that Nativity in Black album. I never ever listen to it anymore but it really turned me on to Sepultura, that cover of Symptom is still one of the heaviest things ever. That album also got me way more interested in Sabbath. I think the only albums I had by them at that point were Paranoid and Sabbath Bloody Sabbath.
I definitely don't share your love for Broken Social Scene though. They're very near the top of the "bands I can't fucking stand" list. My wife listens to them though, so I've heard a lot of their stuff. Also, I see you're going to the Sigur Ros show next Saturday (another band on that list lol). I won't be there, but my wife and her best friend will be. My wife asked me if I wanted to go, but I don't understand why you'd pay 30 bucks to go sleep in a concert hall when you can sleep at home for free!