Syracuse already beat Arizona State (ft. a certain McMillan). Xavier beat Wisconsin. Arizona beat Cleveland St. (Jerryd and Channing happy, sorry for the earlier confusion about which school they attended). Pittsburgh beat Oklahoma St. in a game that was a little tighter than expected. And Kansas convincingly beat Dayton (triple-double from Aldrich).
Missouri beat Marquette in a quite dramatic finish (check comments). Louisville beat Siena in a game that was closer than I would have liked (hope Greg is happy that Siena is out now after beating Ohio). And Michigan State overcame USC in a game that could easily have become an upset.
Oh, the NBA was also playing, and in probably the most interesting one for us Houston beat San Antonio in a tight game by 2 (see also comments). Slight slump for the Spurs, who have been unable to close out games recently?
Player watch: DeJuan Blair. He went down in a hard collision with Byron Eaton, but both were able to continue playing. When he was down and the camera zoomed in, you could see big vertical scars on both knees and a smaller one on his right shoulder. I don't know about his injury history, does anyone else?
Another update: Corvid found an article indicating "reconstructive knee surgery" in high school.