Well... I'm from Bavaria, all I know is that Carl Benz was born in Karlsruhe, and that Stuttgart sucks
Stuttgart has a rich cultural life it seems, but if you're not into plays, classical concerts and post-modern art, nightlife ins't that great, at least I had troubles finding a cool place after midnight when I had to stay there for two weeks for an IT job.
Okay, let me see... here's an event/scene/nightlife for Stuttgart on snapcity.de:
http://www.snapcity.de/nightlife/index.php?relCategoryID=2 (ask babelfish for an English translation).
Oh, and here's a tip, don't call their Mercedes cars Volkswagens.