I wasn't sure about it originally , But Hawk over at AppleGeeks liked it so I just rented it and I found it to be alot of fun. It is defiantly a game for Transformers fans.
The Wii version is pretty cool, the only real gripe I had with it was that the camera was attached to the Wiimote and when your fighting the camera tends to move around a lot. Other then that it played pretty well. You can tell that it was designed with a standard controller in mind, but they did do a pretty good job applying the Wiimote to it.
Some of the missions are really hard but lots of fun and when you finish them with only 2 sec left on the clock it feels really good. I even had a lot of fun Jumping around on buildings and racing around on the streets just collection energon cubes.
I would recommend renting it first for the Wii to make sure you like the controller.
If you have a Xbox360 or PS3 I would almost say its better to pick up that version cause as I said the game was designed with a normal controller in mind and the higher quality graphics really do looks amazing on the transformers.