I am eBaying my copy of Medal of Honor Heroes 2 for Wii. An impulse buy, mostly due to the allure of 32-person multiplayer (via Internet play). Mechanically, though, it's a full-on no-frills first-person shooter, and as such it's just not my cup of tea. I think I expected it to be more like Resident Evil 4, because it shares the mechanic of using the wiimote to aim, but now I see all the ways that RE4 is not a FPS.
It may be worth checking out if you do like FPS games and you want to see how they can work on Wii. Here is its MetaCritic page.