So here's the thing, is the game bad? No, far from it. Is it the best Star Wars game out there? No, go play Knights of the Old Republic you fool.
The game is based between episodes 3 and 4 of the Star Wars movies. The story, if you pay attention actually is well-explained and well-placed in the 20-ish year gap between the two. It explains how the Rebel Alliance came to be and all that good stuff (if you pay close attention you'll even see where the symbol for the rebels came from), and wraps itself up in the end nicely as well, but this is just story-wise. Are there a few plot holes, probably, but the force is the ultimate way to explain them, right?
Anyway the game isn't bad, it takes about 6-8 hours to beat and it is super fun to blast everything to death with Force Lightning.
Outside of that, if you are a Star Wars fan, you'll probably like the game, if not, I'd try KotOR first then see how you feel. They aren't the same type of game but if you aren't a Star Wars fan and don't find yourself liking Knights of the Old Republic, then don't bother with this game.
One last thing, as a warning, and I will leave this with MINIMUM spoilers. Towards the latter part of the game you end up taking on a Star Destroyer with the force, it took me 3 sequences of manipulating it with the sticks. The third time, it tells you to bring the right stick down and stays red, it is supposed to turn yellowish/green when you are in the correct position (when you get there you'll see what I mean) just keep holding that stick up. It is a bug and I can't believe they didn't fix it, but you'll thank me later when you waste an hour going "WTF WHAT DO I HAVE TO DO"