All of IU's football rivalries are forced, outside Purdue. No chance MSU sees our game as any sort of rivalry. They have Michigan, OSU, and PSU, heck even Notre Dame for years...all much bigger.
Maybe for IU...but I'd say the games against the big boys are always more anticipated. And even Illinois when we play them.
I guess since there's a spitoon involved though, its a big one?! And again, when MSU week rolls around, it'll be huge for us. Today though, its the least interesting of our remaining 6 games, and I don't think its even close.