No major ones (knock on wood), threw a sash off the back of the truck at the dump, had a 16 penny nail sticking out of it, cut my arm like a knife, 6 stitches. 7/8 inch spade bit kicked out of a counter top into my left palm, tore up the meat pretty good, compression bandage, nothing solid enough to stitch. The worst one was sticking my finger into a tilt base laminate trimmer, tore the whole finger nail off my middle finger. Surprisingly though it grew back pretty well, a little different than the rest of them but at least I didn't have to get a toenail grafted like they were talking. While these seem pretty gruesome, I have been a cabinetmaker for 23 years and consider myself lucky.
I have never seen nor do I want to see anyone get severely hurt. I think the worst injury I've seen was a guy holding the trigger of a framing gun and nailing his boot to his ankle with a 12 penny screw shank nail. It pulled the leather so tight to his skin they had to cut it just to get something under the head to pry it out. After it was all said and done and he was okay I got him a set of shoelaces and said the next time you put on your boots use these instead. I can picture it now and it still make me shudder.