Hated rivals:
Wisconsin No. 1. Playing them in all of the three major sports especially gives it a boost. Plus, I want to beat Wisconsin in other sports, too. I always want to see the Vikings beat the Packers and even though they don't play as often it's always great to see the Wolves take down the Bucks.
Iowa comes in second, playing for Floyd is great and taking them down in basketball is always sweet.
North Dakota third. Even though it's just one sport, the hockey rivalry is intense. It's just too bad the rivalry has lessened after the conference realignment. The same can be said for action on the ice vs Minnesota Duluth and Denver, but they were never on the level of Minn vs UND.
Not hated rivals:
Nebraska, I think has a fun rivalry right now with the Gophers. When they came into the conference, our programs already had history, with Minnesota even leading it. Since joining the Big Ten the rivalry has gone back and forth, which has been overall good for the match-up I think. Plus, the Chair trophy was developed organically and now goes toward charity.
Michigan, I'd say, is a "rival" I have respect for. Unfortunately they lead the all time series in football and certainly dominated it. Additionally the teams play in different divisions now, so not as many games are played. However, the Little Brown Jug just lends so much history to the two programs. Plus, unlike some of our other rivals, Michigan is another program with several national titles, more even. Another factor keeping Michigan as a rival are the match-ups in hockey, especially considering the two back-to-back Frozen Four games. If the Big Ten Hockey conference did anything good, I think it was bringing more games between Minnesota and Michigan.