I think I found your britpop dance party:

http://purepop.org/forum/


The Underground Lounge is 2 blocks from my apartment.

you know, right after i moved here, i saw the sign outside underground with "britpop" on it, but that was about 2am after we'd been to twisted spoke. and my one friend who lives near there said it happened all the time, though i'd never seen it since. thanks, i'm definitely checking this out.