If you are thinking about playing this type of game, you know full well that chatting with some of the NPC's is half the fun. Well good news, the writing is superb, and the voice acting matches the universe you've found yourself in. I found myself wanting more responses at of my group members, so I would advance the story in order to get more out of them. What's great is there are items that are categorized as gifts, and if you give certain items to a certain character you can trigger quests to find more about their history, and who they are. There are of course just normal gifts that raises their disposition towards you.
I didn't find everyone's special story, but I am sure there are multiple for certain characters, and I can't wait to try new combos in my third playthrough. That being said, the ending is utlimately sad because you cannot keep playing 'after the epic events', as it says in your epiloge save. You can only play DLC episodes with those characters, which is still a nice touch. (New DLC pack called Return to Ostagar coming out soon-ish)
And of course: Pathetic. Maybe it is just me, but seeing two polygons (albeit well rendered) going at each other in their underwear just doesn't hit me the way it's suppose to I think. I'm glad that my character is getting it on, and that bioware is including these 'adult themes' in the game, however I'm not sure the graphics, or the animiation (or the fact that America is still scared to put nudity in games), is ready to emulate intimate relations; take that with a grain of salt like always, but keep in mind there are 4 trophies for 'completing the romance' with four characters. Good hunting.