The biggest one that got me was a 10' 50% SD retic female. I was using long tongs to feed her but instead of standing to one side, my body was right in the line of fire behind the feeder. Of course when she missed it she hit me on the collar bone and shoulder.
Since I was at the very end of her strike range it was more of a punch than a bite, and there wasn't much visible as far as either blood or teeth marks. I did have one heck of a bruise though.