From the original Star Wars arcade, to The Empire Strikes Back on the Atari 2600, to Podracer on the N64, to Dark Forces 2: Jedi Knight, what's your favorite Star Wars game? I mean on any system, handhelds included.
I suspect that mine would be Jedi Knight 2, but unfortunately I can't run it So I'm going to go with Obi-Wan for the X-Box. Sure, it's another game that didn't quite get the lightsaber damage aspect right, but I love controlling the saber with an analog stick and the intuitiveness of all of the force commands. I reckon my second place winner would be Episode 1: Jedi Power Battles (how's that for a breach of quality?).
An optional pick is your LEAST favorite, with mine being Episode 1: The Phantom Menace. I loved being able to deflect blaster bolts for the first time, but EWWW.