There's been so many for this excellent mod - in particular the battle AI, which has ruined most other mods and Native for me.
I think the occasion which made me smile the most was when I was running around with a smallish elite force (50 Lady Valkyries or so - it was pretty far into the game, so I could afford such luxuries), picking off bandits and generally harassing the enemy.
I came across an army of Adventurers, who outnumbered me, but since most of their numbers were farmers and the like, I didn't anticipate too much of a challenge.
This detachment was basically a "Follow Me!.... Charge!" army, since they were pretty statted up, and thus this battle began in much the same way. The map was pretty hilly, but it wouldn't pose a major problem.
Whilst I was sorting out my girls, I could see that the Adventurers were charging in a little too quickly for comfort, so I drew up on a decent hill and got ready to sweep past and charge in.
Then, to my horror, I realised what they were doing. Over the crest of the hill came, not the Adventurer cavalry as I expected, but all of the masses of farmers charging towards me - clearly they were going to die, but what this meant was that my cavalry would not have enough space to get up to charge speed - the farmers were being used as a charge soak, so that the Adventurer cavalry could counter-charge my Knights whilst they hacked the farmers to pieces. There wasn't enough room or time to relocate, so I had to suffer the ignominy of being out-thought by Mount and Blade...
I won the battle, but suffered far more injuries and losses than I should have.