Starfox Command
The first Starfox game for the DS, this is supposedly quite a good wifi game as well. You use a mix of the D pad and touch screen to fight enemy ships in space dogfights while avoiding letting them reach the Great Fox (the main ship your team uses)
The game stars all the usual Starfox characters on your side, with you being generally in control of the main character in the series, Fox McCloud.
There is also wifi mode for this game, where you can take part in airborne battles against other players from around the world.