npcs shouting "I'll get you" or something like that when I'm decapitating their heads.
Skeleton parts rolling on the ground up the hill

"Is that the best you can do!?" as I'm doing the "impale" finishing move with my claymore is up there too. Defiant unto death, eh bandit?

Just the hilarious random stuff that happens, like http://www.youtube.com/watch?v=DaxchmYQVrE

By any chance you were fighting a dark knight to cross a little stream? "It's just a flesh wound!"

http://www.youtube.com/watch?v=zKhEw7nD9C4

I find this funny as well. I once recieved a letter from the courier giving me a quest. He was naked. Maybe he was one of those that you pissed off...lol

I was in Morthal, and I was bored. After firing many bound arrows into the air, one of them comes down and kills someone. For some reason, I don't get a bounty. Then a guard walks up to me and says "Watch the skies, traveler." I nearly crapped my self laughing.

For me it'ld have to be my followers death, The archer from riverwood.

Went to take out the bandit tower on the way to get the golden claw back and told the archer where to go, I pulled my bow and let off 2-3 arrows when I noticed the archer running in, I fired my 4th arrow and bang my follower takes it in the back of the head and dies from the crit, Had a good laugh at it until I noticed the mob's running my way.

Couple off the top of my head....I've got the decapitating perks on both one and two-handed swords, and as I was in the midst of lopping off a bandit's head he says, "I can't wait to count out your coin!" *fwooosh!* This happens often, to varying degrees of hilarity. "Is that all you got!?" *head flies off*

Louis Letrush....Anytime I run to or from Whiterun, I am greeted by FIVE Louis Letrushes by the stables....all clustered together. Nine times out of ten I FUS RO DAH them all and carry on. I wonder how many more will spawn?

Ugh, missed this thread and started my own, never mind, here's my experience.

On entering a cave like structure I saw three bandits at the top of some steps, I took all three out with a bow while in stealth, while looting one of the bodies I accidentally grabbed some leather armor, so I went into my inventory and dropped it, a moment later a bandit marauder came running out, picked up the armor and said "it's careless to leave things lying around" and gave it back to me, then went back to his post, I've got tears from laughter.

Lydia and myself were fighting a dragon, when that dragon started to attack a giant that was close buy. I tried to hit the dragon with arrows while keeping my distance from the giant. Well, then the giant starts coming after me. I'm running from the giant, while fighting the dragon. Finally the dragon gets killed, I don't know if I did it or the giant. I ran up to collect it's soul. As I'm standing there, the giant hits me with his club and there I go, flying in mid air, dead, collecting dragon souls.

Court wizard of Whiterun is having a meal with the steward, while the jarl slouches about in his throne as usual. I stroll up behind the wizard and cut him down in the middle of his dessert, sprawling him across the chair and table. A guard runs up. "Hey you! You have broken the law!" or whatever. I look at him sternly and say "Dont you know who I am? Im a thane of Whiterun!" The guard nervously sheathes his sword and goes " Oh, um, sorry, didnt see it was you". I then wipe off the blood on my trousers, walk up to the throne and talk to the jarl, who just saw his trusted magic user get served as shish-kebob. His first words: "Your not as dumb as you look!"

Great fun.

Just made my first Dead Thrall out of an NPC named Kornalus.

Started a thread about Dead Thralls. http://www.gamesas.com/index.php?/topic/1310803-my-favorite-dead-thrall/

He still tells me his normal NPC comments in between ghastly moans. Makes me laugh a lot. And feel bad about myself.

Green Argonian mage using fireballs with me at 10% HP going SSSSSssssssssss

+1 to Beth for the great reference

One my characters takes Aela the Huntress on adventures. We entered into a dungeon, proceeded to run it through, and got to the end boss. After he went down, I approached an altar and activated it for the quest item. Suddenly, I heard crackling behind me. I turned to see that Aela was hovering in the air. As we left the dungeon, she would either run through the air, or run through the ground waist deep. Somehow her tracking was offset from the map. I eventually saved my game and restarted, and she returned back to normal. But just prior to that, as we were running along a corridor, I turned to see if she was still following me, and she was coming down the corridor with only her head above ground. It was pretty freaky looking.

Good part was seeing two giants taking on an elder dragon. As the dragon finished off one the other giant just mashed it's brain out with a club in some finishing move I hadn't seen before. Made me laugh even harder when I called in Odaviing (sp) to avenge his fallen kin and the fatigued remaining giant just went 'FML!!!'

I was traveling on a horse, doing brotherhood quests and I stopped at the Vnuudal (or something like that I don't remember) and as I got off it we started scooting back and then it shot backwards and I haven't seen it since.. I miss the horse that I had, though I got it for free.

The moment that made me laugh... Taking Lydia to the top of the throat of the world getting her to wait by the edge then shouting her off is a hoot.

I always like NPCs' inability to process recent events.

I killed a dragon. Well, my follower and I did. Some Stormcloaks were behind us on the road. They reached us and were still doing their "Why did you join up?" bit, over and over. Surely the dragon fight had been visible from where they were. And here they were, strolling past the skeleton...and one soldier said "Wow, I'd never have believed it" and all, and the woman just went right on rambling.

My follower and I moved on and ran into a sabre cat. She put two arrows in it, and I hit it with my axe and sent it flying 10 feet. We took a few steps, and a thief came out and threatened us. My character's in full plate, and her companion looks like a cartoon character in dwarven armor and a horned helmet, and we just utterly brushed aside a sabre cat, and this woman thought, "I can take them. No problem"?

Or the wanderer, who got so deep into an ice wraith fight he delivered one of those "submit" lines and was about to die. I killed the wraith, and he's like, "Ah, traveling the countryside, nothing better" or something. Um, hello?

On the other hand, there's the guards' inability to distinguish between an NPC and an animal. I was following some soldiers down a road in Skyrim's weirdest traveling party. The soldiers went up ahead and killed about 4 wolves. Then they couldn't continue. They were stuck staring at these dead wolves like it was CSI: Skyrim. "This is imperial business. Move along." Good god, man, it's just a wolf! And *you* killed it!

Yeah, the stolen horse behavior is odd. I'm not sure if it's still bugged like that.

These have happened to me:
1. I jump off a horse and it immediately "scoots" out of my sight very fast without any animation.
2. I jump off a horse and it starts to walk back to the place where I took it. I let the horse go and continue my journey on foot. After I haven't seen the horse for a long time I decide to fast travel...and there the horse is next to me again! And then it starts walking again back to the place where I took it...

O_O I swear I finished it at level 9 on a companion quest!!!!

....after using all my scrolls and dying dozens of times of course....

Saber cats must be the vengeful type, they're all either blind or toothless.

Decapitating an enemy, only to have him scream, " Hey, stop that!" As his head goes flying through the air.

I found that jumping on those wooden carts and clipping into them makes them flip out and sometimes go flying over a house. I found it funny to get one near a chicken, so jumping on the cart ends up killing the chicken. Now if only I could get a cart to kill one of those annoying kids. Bring on the CK!

A random NPC line that broke me up. My very low level character walked past a guard in Whiterun. He glances at her and says "Steel sword, eh. What are you killing? Butterflies?

I had just reported back from clearing up a forsworn infesticated mine. I step out of a door and the owner of that mine flies over my shoulder 12 feet from the ground. I think that " this guy is seriously in hurry to check his property " then one minute later a courier comes and gives me 100 septims and the letter of inheritance. Poor old mine owner has died and left me 110 septims of which 10 were taken as taxes. I lolled for a while and continued my adventure.