DS. Star Wars. What else do you need to know?
The game controls well. Very well. Every move feels intuitive, but it dosen't really use the touch screen for much. The flight parts also have great control, but you can customize them, so that's even better.
The game may be mostly a GBA port, but it still looks nice. Ubisoft used an art styl that differentiates itself from the movies. Think the Clone Wars cartoon plus a french cartoon and you're halfway there. The flight missions are a beauty. Shadows actually relect from you craft! The framerate remains 60 FPS throughout the game, and never drops.
Sound lends itsel;f from ALL the movies EXCEPT Revenge of the Sith, which is odd. The sound repeats, but the music is still John Williams, ableit repetive.
Overall, it's a good game that resembles SNES games like Double Dragon and N64 games like Rouge Squadron. If you're a Star Wars fan, you can't go wrong. If you're just a gamer (shame on you!) then a rental or two should be fine to cover up the loose ends.