I've been to a BU/BC game when I was in Boston for the weekend and quite honestly outside the 2 campuses it doesn't seem that many give a rat's behind. I was fairly upset the I went to a sports bar after the game and all I saw were some green jerseys for some other apparent sport they play in Boston.
I don't know much about Mich/MSU and UMTC/ND or WI, but from the sounds of the thread, ND has much more of a "rivalry" with UM than the Gophers really care about. I've seen the same thing with RIP and Clarkson; the Chickenhawks get up for the rivalry game while for Tech it's just another game. I'd imagine anything Mich/MSU and UMTC/WI would be quite contentious.
The Clarkson/SLU rivalry envelops both campuses and both of the towns. Potsdam residents literally won't talk to their relatives that live in Canton. Every townie bar has the game on TV. The entire week before the games are filled with back and forth pranks between the campuses. I can imagine this might happen elsewhere in college hockey, but at CCT and SLU, this is literally the one and only sport.
The oddest thing about the SLU/Clarkson rivalry is as much as our fans are fierce rivals on game weekends, it seems that after the game the fans of both teams have an odd respect for each other. Maybe it's the common experience of both student bodies living in the North Country. I know personally that I have a great deal of respect for Coach Marsh and the program he runs over there and even the fans but for a few weekends a year they are (t) and must be destroyed.