For me, my list goes like this.
Saving Private Ryan
Longest Day
Battle of the Bulge
Troy (Yeah, I know it is archaic weapons, but watching Achillies and the Myrmidons take the beach before Troy....WOW)
Terminator II (Great scenes of man vs machine PLUS watching LA bite the big one in Sarah Connor's dream)
There are more, but my mind is blank right now, again, still, yet
My $0.02 !
Mike