The various unrest and reaction to it around the Middle East, certainly. The president's budget.
I think I'll also say that the marathon amendment session in the House mattered, in a couple different ways. I'll do a post in a bit about the possibility of shutdown, but I think that it became more likely. In addition, it was certainly a full employment act for opposition researchers -- a lot of Members took votes this week that are going to turn up in TV ads next fall.
What else? Wisconsin? Other state budget battles? What do you think mattered this week?