This solves the multiple author problem in a fashion that totally makes sense for newspapers. You usually have production staff — who aren't the authors — assigning multiple authors to stories. I've felt this has been a huge gap in WordPress's ability to serve mid- to large- periodicals.
This plugin solves it in the most elegant way — an author taxonomy that is used to replace the built-in author display line. Not only does this remove the default WordPress thing where it displays as posted by the editor or admin user posting the content, but it also opens the way for creating rich author pages in the future — just add some taxonomy templates to your theme and you're on your way.
Seriously, I was considering writing this EXACT plugin, until I stumbled across this.
Well done, sir. As a long-time journo-developer and WordPress user, I salute you.