Bridge District, SoA...
If you still decide to demand the ransom for the woman, from the noble guy (I *know* his name, but can't recall, he has those pantaloons) but then free the woman anyway or something like this (so change your decision somehow so it has an abnormal result on the quest, I don't remember exactly how I did it), then he keeps appearing and disappearing (apparently his script causes this) at the entrance of Copper Coronet each night (you can not speak to him), his clothes are always DIFFERENT color
It's also funny, and VERY annoying that if you want to keep Drizzt's items if he dies, you have to hide them. Marcor Harpell, the wizard who resurrects Drizzts and his companions will arrive when you leave the crypts and will take all items of Drizzt from you! If you put them to the ground quickly, he notices it, later he appears again and if you do the ground trick again, he will cast Imprisonment on the party third time. BUT: you can escape this as well (and I suppose that the developers didn't care or forgot to care of this) by suing the proper shields against imprisonment etc.
So the items will remain yours... now comes the best part: from this, Marcor Harpell will appear in EVERY area you visit, but won't speak. Although he will always turn into the direction of your protagonist, and the protagonist too quickly turns back, into Marcor's direction! So movement is very very difficult with the party because it is very slow (always stops when the protagonist and Marcor 'watch' each other)
In this case, I suppose the bug is the following: the items are still at you, so the script that summons Marcor will trigger and Marcor tries to speak but you should be dead this time due to imprisonment, Marcor has no valid dialog... so he just TRIES to initiate a dialog.
What are the most interesting and/or funniest bug(s) that you have encountered?