I have it and the game is really bad, it does look cool, but the gameplay gets repetitive and it is not as fun as the one i have on my psp.
The best rpg i have played on the wii so far is little king's story, try it out, it is alot like pikmin only less boring and really addicting.
here are some of the ones i have tried and approve of being really good:
super paper mario
New super mario brothers wii
Super Mario Galaxy
Legend of zelda twilight princess
tatsunoko vs capcom
guilty gear accent core 2
taiko no tatsujin wii (japan import)
donkey kong jungle beat
wario ware smooth moves
tales of symphonia
phantom brave: we meet again
super Smash Bros brawl
wiiplay
pop&music
klonoa
a boy and his blob
Mario Kart wii
little kings story
spectrobes origins
wii sports resort
great shooters on the wii:
the conduit
call of duty world at war
metroid prime trilogy
medal of honor heroes 2
brothers in arms d-day
dead space extraction
house of the dead 2&3
the house of the dead overkill
onslaught (wiiware)
water warfare (wiiware)
resident evil 4 wii edition