I was playing on a newer version of DF, I had just left a fortress and reclaimed it out of interest to see if there'd be any cavern monsters walking the corridors.
I was pretty unlucky: The very entrance to the caverns had a troll waiting for me. Before I could order my dwarves to safety, most of them charged the antagonizing attacker, alas it was all in vain, they had only their clothes and no combat experience at all, only one had an axe with him and even he couldn't effectively use it in battle.
It looked bleak for the Dwarves and I started to prepare myself for the worst before a lone wrestler broke from the unconcious group:
Tisod The UnstoppableAt first I chuckled. It seemed as if he had very little chance of beating such a monster in a one on one punchout. But like the impressive underdog he was he carried on, he demonstrated the Dwarven stubborness that is responsible for their ways of life, he took punch after punch endlessly for almost an hour and the best the Troll managed was a bruise on his left hand consistently, never could the Dwarf be overpowered, however, Tisod grew stronger and stronger, Rocky style, until eventually he could break that troll.
I was stunned to watch him damage the monster to the point the Troll seemed to just give up on life and run to the nearest trap, ending his tortured existance in one turn.
Problem, troll? ( First part can be found here, I suppose you can click my name for the others:
http://mkv25.net/dfma/movie-2248-thedwarventank-partone )
Oddly enough. His stats were incredibly poor, but he had a sum of patience and had a good idea of the position of his own body.