The name Tony Rezko has cropped up in the news a lot these days.  You’ve probably heard or read that he’s a real-estate developer entwined in a corruption scandal–and oh, by the way, he has connections to Barack Obama. But if that’s as much of the story you know, then Newsweek has a guide to the facts and faces in the case that is quite handy for sounding news savvy while discoursing around the water-cooler.