In my wife's "Burnt Offerings" game, our party made it down to the second level of Thistletop and fought Bruthazmus, his concubines, and an NPC (Orek, I believe). We took care of the bugbear and the goblins, but the NPC held his ground for awhile.
The conversation went thusly between myself, playing a greataxe-wielding dwarf barbarian, and another player (Harms) who was running a weapon master-archetype fighter with a flail:
Me: "We need to interrogate him. Try to deal non-lethal damage..." *roll* "Hit, 11 nonlethal."
Harms: "CMB to trip."
GM: "He falls prone, but it's his turn. He stands up."
Me and Harms: "AoO! Trying for nonlethal again." *rolls* "Crap, we missed."
(Another round passes in much the same fashion, with both of us missing our nonlethal attack rolls.)
Me: "Alright, screw this, he's got 11 nonlethal already, so even if we deal lethal damage, it shouldn't completely kill him." *roll*
And then THIS happened. (We auto-confirm naturasl 20s, by the way, to offset the fact that we use the Critical Fumble Deck for natural 1s.)
Harms: "Yyyyeeeeeeeah. Yeah, that's not how you knock someone out."
GM: "Sooooo, 45 damage? Yeah. He's at negative 33. Good job, guys."
Me: "...Anyone know how to cast speak with dead?"