I find most of Slayer's music sort of tame, actually. I've listened to alot of fear factory and sepultura, so Slayer don't really have any curveballs up their sleeves.
Their lyrics have bothered me a bit, so I don't own any of their albums. I was considering getting Seasons at one point.
GHUA, I'm going to avoid. Too much bad karma. It came out on 9/11 for gosh sake. That's creepy.
Actually, so did Uncivilization by Biohazard. And the original presing of Live Scenes in New York by Dream tHeater(had burning NYC on cover). Veeeerry creepy...