I'm with the poster who said that, even when his brain wins over his heart and he starts out rooting for UNC, he just can't do it after a few minutes. I will be rooting for MSU, even though I really do believe its better for Duke if UNC wins, and if the ACC looks as strong as possible when we make our run to win it.
I also USED to root for UNC against any non-ACC foe. But for me that changed when I discovered theri message boards, and found out how much the UNC fans hate Duke. I was no longer able to root for them out of logic, when I saw the degree of nastiness over there.