Every time the AI got jealous in MTW and mass attacked me.

Besides that, I can't really think of a good one.

Spoiler Alert, click show to read: 
Suffice to say the last one, Kaileena in Warrior Within was neither surprising, nor shocking, nor in any way well-placed enough to awaken any emotions. Nice boobies, though.


Wait... here's a good one:

Spoiler Alert, click show to read: 
Yoshimo in BG2... the bastard betrayed me just when the going was getting tough. I got him good though, ripped his heart out