Motto (Barnette, Wiseman, 2005): "Problem sets in macro at Minnesota are like burritos at Chipotle - when you feel you are about to pass out, you take a deep breath and keep working on it. And just like you go to Chipotle if you want a serious burrito, you go to Minnesota if you want to do serious macro."
A useful link - Anderson's website with a lot of material from his teaching in 2005-2006.