The Wii is not a good FPS console, the best offer is Metroid Prime Trilogy 3 sweet games for the price of one.
Good titles
Plataformers
Mario Galaxy 1 and 2
Mini Ninjas (cheap and quite good actually)
A boy and his blob (starts easy, ends quite hard)
NSMB
Wario Land Shake it
Mushroom Men (cult classic)
Action/Adventure
Zelda Twilight Princess
No More Heroes 1 and 2
Red Steel 2 (this one could pass as a FPS I think)
Okami (shame for everyone that didn't bought this one on the PS2)
Madworld (another one you could get really cheap)
Fighthing
Super Smash Bros
Tatsunoko Vs Capcom
Guilty Gear Accent Core
On Rails
Dead Space Extraction
House of the Dead Overkill
Resident Evil Chronicles (Both games)
RPGs
Little King's Story
Fire Emblem Radiant Dawn (It's soooo hard)
Paper Mario
Rune Factory Frontier
Monster Hunter Tri
Sports
Mario Kart
Mario Strikers
Tiger Wood
Punch Out
