Well, ground-breaking is really different from "favorite," or even best. In the Court of the Crimson King, definitely broke ground, but Crimso's best work came later, from Larks Tongues in Aspic through Red. And it's hard to imagine discussing ground-breaking Prog without talking about The Yes Album. The rap and hip hop stuff I just can't relate to, but that doesn't mean the genre, and therefore some of the recordings, were not ground-breaking. I just don't get it. I could have come up with a few Mile's records that I think are better. I even think Kind of Blue may be as ground-breaking, but Bitches Brew is up there, certainly. The compilation albums are just weird choices, and personally, I don't think punk broke any ground, really. It's just another incarnation of the variety of rock n roll rebellion that flips a middle finger at the rest of the music world, discounting commerciality, production values and even musical ability. And it wasn't the first of its kind. Boring crap, most of it, though it certainly had its high marks, and The Ramones are one of those. I'd take The Clash, or early Pretenders over them. I'd take a beating over The Sex Pistols.
These lists are always great conversation pieces, if not great cultural education.
Tim