It looks pretty, but the demo quickly gets boring. There's no variety in enemies, the battles, or the linear map. I'd pass on #1.
However, Episode 2 is now out, and that demo has more meat on it. Battles feel more alive, with different formats of encounters, and good use of the real-time battle clock. The maps feel more natural than being caged into a little lane, even if there isn't a whole lot more to explore.
Both episodes are now selling for $15 apiece. At that price, get them in Lucas order - Buy #2 first, and only get #1 if you really need to fill in why Fruit Vader turned evil.