PAPOW!! It's tough to beat that Whitesnake song.. seriously.. I polled that song along time ago against a few others .. It always wins..
In my subjective opinion (and now we're talking about hard'n'heavy genre - i.e. minus The Beatles, Stones, Floyd, Eagles, etc.), "Still of the Night" can only be surpassed by some of the creations by Queen, Led Zeppelin, Deep Purple, Scorpions, perhaps AC/DC, Metallica, Iron Maiden (indulging to my weaknesses, I'd add some tunes by UFO, Rainbow, Dio, Uriah Heep, Europe, Def Leppard
)...
But in general, it's unbelievably powerful song - one of the best in heavy music of all times.