Pros: good plot, cool equipment, fun idea for game
Cons: bad angles, bad controls, very tedious game
The bottom line: Don't get it for Wii, too annoying
I have always loved Splinter Cell because of the whole idea of stealth, but on the Wii it is a completely different experience.
Its really annoying especially in coop when you have to work together using movements of your wiimote. it takes too long to react and i made me just want to shoot everyone in sight (in the earlier levels you were allowed to, so i did).
Once you get the hang of the controls a little better it gets much better, especially because of all the different types of equipment that you have that take your mind off of the annoying controls.
Camera = Annoying
You have to work with the camera, ask it nicely and you have a chance of getting the angle that you want. that was a lie, you will never get the right angle, get used to it.
I thought the plot was interesting as usual, but on the Wii, i really couldn't pay attention.
All in all i'm sure this game would play nicely on any other system, maybe an xbox or PS2, but not on the Wii, if you want to play a game for the Wii, go for Mario Galaxy, or Super Smash Brawl which is coming out soon.