I think that star wars shadows of the empire is a shoot 'em up game. It's been a long time since i played a nintendo star wars game, so if this isn't the one your looking for, then just delete it ( if you want) and have a look at the other games at www.ididntreadtherules.net
^^ Jesus Christ, man, no rom links. Read the rules... edit that post. Also, SotE is only part-shooter. It deals with actual, on-ground levels quite a lot. I suggest Rogue Squadron - it's not currently emulated, but it is on the N64.
There isn't much to choose from unfortunately.The only traditional shmup that comes to mind (besides Star Soldier) is Dezaemon 3D, which plays an awful lot like Rayforce. A couple of non-traditional shooters worth playing are Tsumi to Batsu (Sin and Punishment) and Bakuretsu Muteki Bangai-O. All three were Japan only.
Bakuretsu Muteki Bangai-O <-- That game gets the OFFICIAL~! Tjalian Seal of Awesomeness. Definate Reccomendation to any-one (if it'll emulate at a good FPS >.>)