Those who play Dungeons & Dragons and the like know what this skill is about. For those who don't know, in short the skill is a counterskill to Bluff. This skill showed up in Temple of Elemental Evil, but not in Neverwinter Nights games.
We don't know how player mechanics will work, but we hear about feats, skills and others. I'm here to tell this: do not forsake social skills, especially Sense Motive. Why?
- First of all It's a anti-bluff skill. ("YOU LIE!")
- You can sense the emotions of people you talk to. ("This guy is angry at me. If I want him on my side, I need to calm him.")
- Behavior check ("That man acts strangely from the begining. Maybe he's planning something?")
- Like behavior check but detecing magic, like if somebody is dominated or charmed. ("He's got a hollow look. He's mind controlled!")
- Detecting a secret message. ("They're talking about the weather... wait... they're spies! They're communicating using some kind of secret code!")
And the last: - Sensing what dialog option would affect our team and how. For example, if we say this thing, will it affect our cleric faith? And how much?