Dallas is one of the most diverse parts of the US. The sheer amount of different ethnic food I regularly eat here is mind-boggling, and it actually made it very hard to pick a place when I was considering moving a few years ago (I wanted a place that was both just as diverse and just as suburban as Dallas; I ended up deciding I'd pick Vegas in case circumstances drove me to leave), and I've interacted with so many people from so many different countries and cultures.