I've had a few fat lips from sparring!!
Thats about it really. Pretty lame when compared to MMA.

I did get hit round the head with a baseball bat during a demonstration once. Made a nice clunk noise and gave me a bit of a lump on my head. Lucky i was already moving away from the bat and it wasn't a full swing but I carried on as if nothing had happened so again not too major... Got it on video though and the guy filming was up on a balcony looking down and the cam picked up the sound LOL!