Wow. What a great game. The best single player experience since Half-Life!!!
It's the longest game I've ever played (every shooter I always beat in one sitting...this game took TWO sittings). The puzzles are frustrating and I got stuck in every level, but it's a nice break from the standard FIND THE CHERRY KEY-type puzzles and it keeps the combat from getting old or boring.
And the lightsaber duels were great...and the final boss was AWESOME.