This past Tuesday I went to the Edmonton stop on Black Sabbath's Heaven and Hell tour with Ronnie James Dio. I've never been to a arena concert that I've enjoyed and I've got to say without actually knowing anything about Dio except for the song Holy Diver, that man is one hell of a showman. Without knowing a single Sabbath song they played that night (never been a fan, I went because of it was a friend's birthday) I had a great time!
So if you've got nothing better to do and they are in your town I'd recommend checking it out.