Fantastic game, for me anyway, but I'm a huge fan of both Star Wars & BioWare's other RPGs (Baldurs Gate & NWN).
Its Star Wars connection is pretty lose, beyond using the same lingo, aliens and the existance of Jedi there is really nothing familiar in the game, or nothing that couldn't have come from stock sci-fi.
It is definately an RPG, as your reaction time will have no bearing on the game. They did a fantastic job of making it LOOK like it does, particularly with melee combat. It seems like lots of forethought was put into balancing different playing styles, so if you want to be an evil rampage killer or an angelic pacifist both are pretty well set up.
The system is very similar to Neverwinter Nights with look & feel, except many portions of the game have been streamlined to speed things up (like an automatic return to hide-out, return to last point option), and you can now have two cohorts with a pretty good amount of control over each of them. The characters are much more interesting than in most RPGs, with above average dialogue and voice acting.