The original thread term means...well, not a lot. Plenty of bands could fit under the umbrella. You might want to first check out ZE Records. Amazing NY label from the late 70s and early 80s that focused on both No Wave and Disco. Was (Not Was), Kid Creole, Cristina, James Chance (already mentioned), Lizzy Mercier Descloux, and tons others (They have Mutant Disco and No Wave comps). There's also 99 Records, which put out Liquid Liquid, Shriekback, ESG, Bush Tetras...everything is amazing. Guess there's also Pete Shelley's early solo material, Arthur Russell's Dinosaur L...my brain is kind of crapping out trying to connect the dots. There's also the New York Noise compliations on Soul Jazz, the Arthur Russell on Soul Jazz, Pigbag, Pop Group...
There aren't many current groups that grab my attention in the same way as the original stuff. But the Notwave comp that DFA/Rong put out this fall is great. DFA is the best current label. Just pick up their comps #1 and #2. Out Hud's first album was great, !!! are totes awesome, and Maurice Fulton is a genius (but only MU might fall under "dance punk"--check out both MU albums!).
Sorry for the rambling, but 78-84 is probably my favorite time in music, so it's hard to pick and choose.