Slightly off topic, but any recommendations on Mercyful Fate stuff? I don't know much of their back catalogue, though I did play this at a Halloween party once, I enjoyed it immensely, other people not so much!
Personally I'd recommend "Don't Break the Oath"[0] or "Melissa"[1]. But really their whole LP discography can be listened to in an afternoon. King Diamond as a solo artist has been a bit more prolific though.