Mark of Intellect
Mark of Altruism
Mark of Honor
Mark of Courage
As the game stands, I believe that only Intellect and Altruism are presently obtainable. The scenarios that allow a person to acquire these badges spawn (very rarely) within established coordinates on Tatooine, and they are related to a Hermit who basically alludes to being a jedi. Someone who has these badges has probably spent a great deal of time wandering the desert hoping to be in the right place at the right time.
If you want to learn about the badges, this site is the best place for info:
http://www.towpc.com/swg/