The best entrance music of all-time, that we don't get to hear in old-footage, is Hulk Hogan coming out to Eye of the Tiger(from Rocky) circa 84/85. This was pretty bad-ass at the time, and so much better than Real American.
The issue of copyrighted music has really ruined replays/dvds of the original ECW. Joey Styles himself has said that he considers the new versions of original ECW shows(without the old music) to be unwatchable and I agree. It's not WWE's fault, they'd have to spend millions for the rights to the songs but it really does ruin things.