I'm pretty sure it was a bug but on Taris you get a mission to rescue a girl from the hospital as part of the agent's story. During the cutscene you see her hiding behind a box with a blaster and your character walking up. She then jumps out and fires a shot at you. Instead, she kept shooting so my agent calmly says, "I'm with Inteligence, i'm here to rescue you." as this chick is firing away at me. Had me laughing so hard.
Another good one is when you first meet Darth Zhorrid and she has her guards attack you. After I killed them my agent said, "You just tried to kill me!" and she replies, "No i didn't, my guards did." And thne goes on to introduce herself. Had me laughing at the pure insanity of it