The "guy sitting courtside" was none other than Mark Walter -- Dodgers owner and one of NU's biggest donors. It was really bizarre. Here's what I saw: About midway through the second half, one of the refs went over to the NU staffer in charge of security (I don't know his name, but he's at every game in a shirt and tie), and pointed over to the courtside seats. The security guy then headed over there. I assumed he was going to eject, or at least give a stern warning to, a couple of Hawkeye fans who were in the second courtside row. They were being loud and demonstrative the whole game -- nothing too obnoxious, but I thought maybe they had said something to the refs or to an NU player. Instead, the security guy sat in the empty seat next to Mark Walter and started chatting with him. I hadn't noticed any sort of misbehavior by Walter at all. They chatted for a while, with Walter smiling and laughing. After a pretty long time (10 minutes or so), the security guy left, and Walter stayed. Really strange.