"The Balrog takes 7d6 falling damage..."
Two Towers: LotR as a D&D game, and tons of other stuff.
GM: Failed your climb check, huh? You slip and plummet. PC1: Cool! PC2: Cool? Dude, you're falling to your death! Now we have to finish this stupid quest without your mage. PC1 (ignoring PC2): Can I see my sword? DM: Err... sure! PC1: Okay, I want to fall down and grab my sword from mid-air. PC2: What the hell? You dropped that like two rounds ago when you failed your balance check, then you wasted another round calling me a "fool" in character. PC1: So? PC2: You know how far something falls in three rounds? DM (ignoring PC2): Okay, you've got it! Glamdring slides into your hand. You see the balrog falling below you. PC2: But balrogs have wings! It says so right in the MM! PC1 (ignoring PC2): Cool! I want to go attack the balrog! PC2: You WHAT? Are you stoopid? DM: You... umm, okay. Roll to hit. PC2: What? No AoO? PC1: A critical! I hang on to him and keep hitting him on the way down. Whack! (to PC2) This is going to be MY kill, baby. All those lovely, glorious XPs for a balrog, mine alone. DM: (rolls a critical for the balrog that would kill PC1, panics, ignores dice) It missed you! Roll to hit again. PC1: YEAH! You're going down, servant of Melkor! PC2: This is stupid. I'm going to go get some Mountain Dew.
Fun stuff (via Randy).

