Galileo. At La Sapienza, some professors (including one who wrote a secular hagiography of Galileo) objected to the University's invitation of Pope Benedict XVI. The main rationale given was that about 15 years before, the man- who- would- be- pope had quoted a statement on Galileo that fell short of adulation. Now, a statue of Galileo will be coming to the Vatican (hat tip: Catholic Sensibility).
By the way, Issue 2, 2008 Traces has a series of articles on the La Sapienza issues.