Also, to aid in the ENTP vs ENFP dilemma, @Emperor Enigma,
Do you unconsciously seem to notice people's emotional attachments/reactions to certain stimuli in the environment, i.e. what things mean to people emotionally? Do you ever feel like you are confident (most likely overconfident) in how people view you, to the point where you assure yourself that people hold a specific opinion of you, but then find out that their opinion of you is somewhat different, to your surprise?
Do you consciously impose an ethical framework on the environment, trying to make sure that things are handled fairly, justly, and politely according to your own moral compass? Do you attempt to 'fix' people who are deemed amoral or who violate your ethical creed and set them right? Do you generally keep your emotional tidings concealed and to yourself?