There's a Youtube channel called "Tips from a Shipwright" where you can see some amazing woodworking from a Zen master in the craft of building and repairing wooden boats.
Anyway, once in a while there's just no other good way to make a certain cut and he picks up "Mister Friendly", a saw blade mounted to an angle grinder.
Mister Friendly's cousin here is only slightly less horrifying.
EDIT:
Oh ****, I just noticed the old worn-down stone used as a spacer, and the fact that it's slightly askew on the bench, implying it's not bolted down, or was moved from its original location because of all the blood splatter... OK, this is probably worse than Mister Friendly.