One of the big four of thrash metal, Slayer is still kicking. Unfortunately not as much as they used to, mainly because of the passing of Jeff Hanneman. And I gotta be honest here, I think Lombardo's drumming in Slayer wasn't that good anymore after his first leave of absence. I saw them a couple of times with the reunited original line-up and they sounded tired, lazy and all over the place. Then after Paul Bostaph replaced Lombardo the second time they sounded much tighter.
But I digress: Slayer has done some classic metal albums which usually end up on any top ten lists for a good reason. Reign in Blood, South of Heaven, Seasons in the Abyss is a killer "trilogy" and that's where the majority of my favourites come from.