For better or worse it's Call of Duty on the Wii... again.
Kudos to Activision for even bothering to release it on the Wii, and Treyarch have once again done the near-impossible job of successfully porting it.
Apart from that, there's not a lot to say. It's practically identical to its predecessors in every way, albeit with a slightly improved interface and a slightly different XP system for multiplayer. Black Ops' Zombie mode has also been replaced with a co-op survival mode.
One thing I noticed that I didn't like so much is the tendency for almost every level in single player to have endlessly spawning enemies which will only stop once you advance to a certain trigger-point. It's a non-stop shoot-fest with little time spent thinking tactically. But that's CoD for you!
The bottom line is that it's still just as much of a blast to play as the other CoD instalments on the Wii, and the multiplayer will give you many hours of enjoyment unlocking all the weapons and perks, just like it did last year.