I've been seeing a lot of articles recently about threatened Modern buildings around the country, including one from last week about a church in Washington, DC trying to revoke its landmark status in order to tear the building down. It's built in the Brutalist style like Oberlin's own Mudd Center, and it seems to get the same love/hate reaction. I personally love Mudd and became really interested in Brutalism, but it's definitely a flawed approach to building.
A bunch of other buildings in the Chicago area are threatened with demolition, including the Gunner's Mate School at Great Lakes, an early example of the steel and glass style found later in the Sear's Tower. Most buildings from this time period are not designated as landmarks, and often lack popular support for protection, so they're easy targets for demolition.