Nose, falling in to concrete step.
Arm, while at school. Some guy fell in to me when I was leaning on the way waiting to go in to a class. By a freak chance my arm was stuck out, elbow on the wall, and took his full weight. It hurt like hell but then in the class I could hardly hold my pen, and was in a cold sweat (which was a new one). Went to hospital that night and sure enough it had broken.
Little finger. Stupid one because i was at a university party and very drunk and a little down and someone bet me I wouldnt punch a wall. He lost the bet, I broke my little finger near the knuckle and never got it seen to. It now sticks out at a slightly exagerated angle. I would not recommend this course of action.