Has to be fighting goblins. Not the most exciting of encounters but that one was really fun. One of our party members stabbed his sword into the ground to draw his ranged weapon & a goblin grabbed it. He spent the next 10 rounds chasing it all over the map trying to get his sword back.
I was in tears of laughter the entire time :p
It was a halberd, I believe. Yes, I think that was one of my favorite encounters for your group so far. It probably wasn't so great for Jay (the owner of the weapon). The rest of us enjoyed it, I think, and it was a great use of the goblin's ability to disengage and show how good they are at skirmishing.