Here's some crazy footage: at some point in 1985, Slayer took Studio 54, which was, by then, no longer a disco club, by force, playing the shit out of "Hell Awaits" (and presumably others). It's likely that the Gates of Hell were never closer to Studio 54 than at this very moment in time. Watch this, now, pretty much. [Daily Swarm]
That video makes this Thursday unique.