resident evil 4 wii edition (its third person buts its awesome)
there is this new wii exculsive fps called the conduit you might want to check that out
Wii- purple steel, Rayman Raving Rabbids, Wario Ware delicate strikes, Wii activities (that contains the Wii even with the undeniable fact that) DS- sense the Magic, Mario Kart, Jam sessions, they have some Pokemon video games once you're into that, and there is so lots extra that are extremely exciting.
I really don't think there are any traditional FPS type games for the Wii. The closest that comes to mind is that Links Target Practice type game which has you shooting innocent rupees in a shooting gallery.
If you want FPS games, you should have bought a Xbox 360.