agent under fire has crap controls but its fun ( especially with low gravity and q claw turned on. its spiderman mode!! o and escort was fun too)
everything or nothing isnt first person but is fun as hell (and 3 bucks at gamestop)
MOH:rising sun is a great multiplayer game
european assault also takes the controls up a notch from rs, but i like rs multiplayer better
metroid prime 2 is fun, but mostly only on single. multiplayer mode was kind of lacking.
rogue agent was ok, but the reticle is near impossible to see.
frontline was good, but the controls are kinda bad, and the graphics really do suck (and i play n64 games more than gcube, so that should say something)
geist was also pretty good, but very disappoiting.
out of those, i have to say everything or nothing and rising sun have the best multiplayer.
p.s. since you have a wii, GET HOUSE OF THE DEAD OVERKILL!!! that game was an amazing shooter, and it was funny as hell. you can get it new at a walmart for 20 bucks.
o crap i forgot nightfire!! nightfire was amazing, with great multiplayer, a great single, and the phoenix samurai. o yea.
o and if you have an n64, make sure you have perfect dark or i will eat ur babies.