It's a commonly held belief that members of Slayer (primarily Kerry King) became absolute douchebags only after the release of Decade Of Aggression. While it's true that it was then that matters began to deteriorate, this video is proof that these guys were absolute turds long before the developments that took place in the mid to late 90s (getting fat, getting WWE style tattoos, terrible facial hair). Note the braided goatee, he's giving Scott Ian a run for his money.
Anyway, I remember seeing this video for the first time around 1989 and being so bummed that the guys who I thought were pure evil, were this moronic. It's worth noting that Kerry King actually comes off the best in this video, even though he's holding oversized rosary beads for some reason. Also note the dope Peavy practice amp.