These threads are cool:
Blind Guardian - Sacred Worlds - At The Edge of Time
This is one of the most perfect examples of orchestral integration with metal music ever for me. It builds so well, is just so well arranged all round and feels a complete track as it fades out the guitars to allow the orchestral elements to close the track. The chorus is complete chest-beating, anthemic majesty and yet never once feels wanky!
Judas Priest - Painkiller - Painkiller
I mean, come on? This sets the tone for the entire album perfectly. Driven intensity from the word go as Scott bashes the living bejesus out of his drum kit before KK and Glenn get let loose with those fucking duelling guitars!
Pantera - Cowboys from Hell - Cowboys from Hell
I still lose my shit to this, years after first hearing it. Whilst the rest of the album hasn't quite stood the test of time so well, the opening track makes for a nostalgia driven piece of brilliance for me.