[@Sierra] Dark side can be fun if it's set in the right Era.  Old Republic is ripe for Dark Side characters because you've got the Sith Empire in the picture.  Once you reach the Clone Wars, the Rise of the Empire, and the Galactic Civil War then the Rule of Two and the fact that the Sith have "been extinct for a millennia" makes playing a Dark Side character excessively challenging and problematic.  Once you get into the New Republic and the Legacy of the Force Eras then you get a little more wiggle room, but it is still quite a challenge.  If you're thinking of a Sith/Jedi pairing during the Old Republic we might be able to brainstorm something interesting together.