Not road debris per se, but had an incident while traveling through the twisties on hwy 50 in Indiana at about midnight. I was at a spirited pace when I rounded the corner at speed when right in front of me was a deer standing in the road. I didn't have time to make much of a correction and my knee still struck the deer's snout leaving a hell of a bruise on my knee.

I pulled over, parked the bike and sat there for about twenty minutes while my heart calmed down. I imagine it was quite an ordeal for the deer too.