NPCs contradict what they say just a second ago. For instance, I'm doing the Unseeing Eye quest right now, and I am talking to Gaal:
I told him that I wasn't interrested in having my eyes removed.
"Gaal: Hmmmm. It is a sign of weakness to resfuse the enligntment. Would you walk about willingly with out arms, with out feet?
I do not think so."
Well, would I walk about willingly with out eyes? I do not think so
In Unfinished Business, Minsc says something along the lines of:
"Minsc: You reek with a certain stink of something for
not helping me find Boo. I will find Boo on my own and get my revenge on him when I return."
Then he leaves my party, and right away, he says:
"Minsc: You do not want Minsc and Boo to leave now, do you?
Me: No, get back in the group, or maybe it was, 'it was a mistake."
And Minsc came back into my group just like that

.
Any more of these contradictions? They're kinda funny if you ask me.