Not to join in some genre war or anything, but I'm familiar with all but a couple of the bands mentioned in this thread and I've never heard the term noise-punk in my life. Most of these bands/artists usually fall under the banner of either noise, noise rock, or art rock, although plenty of other genres are represented as well (Branca and Chatham are more often than not, in my experience, considered classical). I'm not arguing against "noise-punk," but I'm just saying for those of you who were unaware of such a term, that doesn't mean much.
Maybe it's just me, but I don't think noise-punk (whatever the hell it is) is the same as noise-rock, noise, or art-rock... 'Noise-rock' always brings to mind stuff like industrial music, math-rock and post-rock, and I always felt that kinda stuff was a lot more starchy and intellectual than the current crop of noisey bands... 'Noise' just means, well, pure noise, whereas many of these bands have some form of melody/structure going on... And 'art-rock' has been used so often it's lost all meaning, just like the term 'indie': It's been applied to everything from Franz Ferdinand to the Flaming Lips...
I know it's just a semantic thing, but stilll... If you want to use a more well-defined term, "pigfuck" and "scuzz-rock" would probably be a better choice, referring to stuff like Butthole Surfers, Big Black, Pussy Galore, etc...
Also, I think Lou Reed is actually touring MMM again with some noise band...