There are teams I love to see Alabama destroy, and some I enjoy seeing get beat no matter who beats them. Tennessee is one that I always want Bama to humiliate. In football, hate often depends on coaches or certain players. I despised Miami for years because of a run of coaches and thug players. Not so much lately and even less with Richt unless he proves to be less than I think. Some teams I just enjoy seeing them lose. Of course the barn is one. Any sport, any opponent, anytime, anywhere. Closely behind them is Georgia Tech. As I stated before, I love to humiliate Tennessee when Alabama plays them, but I don't have as much hate when they play others. It kind of depends on who they are playing. Especially in basketball, as long as Bama beats them, I don't care about the rest.
The point of this is the most hated teams overall though, and I too love being hated by others. It just means you are consistently whipping their @ss!