Angel of Death and Necrophobic are the two easy choices. The third one is a toss up between Altar of Sacrifice and Raining Blood, but I'll go with Altar because it has one of my favourite lines on the album: "Enter to the realm of Satan!"
9/6 - Crimson Shadows CD Release Party
10/10 - Sabaton/Amon Amarth (?)
10/17 - Satan
10/18 - King Diamond