I love Metallica's The Black Album and I don't give a flying fuck what other people think about it. Their later stuff became too rockish for me and lost the magic, but The Black Album is like a fucking pot brownie, it's so much fun. I don't respect it the way I respect most of the music I listen to, and it's not as good as Metallica's early albums, but it's probably one of the most fun albums I have.
On that same topic... I don't understand the common hate for And Justice For All. Is it because they made a music video for that album, is that why people hate it? Because it's the most "metal" album Metallica ever did... I mean, it's nowhere near as innovative, powerful, impressive or awesome as some of Metallica's earlier work, no doubt about it. But as far as the typical metal sounds, Justice has more of that kind of thing than Metallica's earlier albums. I guess I could understand fully why somebody would not like it because maybe it is derivative and not as amazing as their earlier work. But it seems to get lumped in with their later, non-metal albums, when it's as metal as any Metallica album ever was.
Also... I watched Headbanger's Ball last Saturday and enjoyed every single song they played. Some of them might be considered respectable bands but some of the bands were obviously screamo.