Not cracked but pretty banged up.

1) 1995. Got stuck between the curb and a bus going downhill with a manhole that was dug out around it. With nowhere to go I slammed the breaks at first but then tried to jump the hole. (I was into mountain biking at the time so jumping that hole seemed doable.) Bad idea since I had lost all my momentum from braking. Went over the handle bars landing face first on the asphalt. Sprained my right arm pretty bad since I never let go the the rear break lever through the flip. The bus stopped and the driver asked if I was OK. I said I was and rode to work not realizing how bad I looked. I had road rash all over my right side from my face to my knee. To this day I have scar tissue on the inside of my right elbow that limits its movement a bit.

2) 2010. Hit a pot hole a few blocks from my house. I knew it was there but forgot about it one afternoon. Stuck my left arm out to signal my turn just as the front wheel got caught in the groove of the pot hole. Lost control of the bike and slammed my chest into the handlebars. Helmet suffered some scuffing as I rolled on the road a few feet. Broke a rib which hurt like hell for two months.