I got this version of madden for Christmas last year, and am still playing it.
Madden 09 for the wii takes on more wii controls to give you a more interactive experience. For example, in order to snap the ball you have to pull the wii controller up, and to throw the ball you have to push the controller down away from you. At first these controls seem a bit alien after only every using a gamepad to play madden, but soon they become second nature and you don't even realise your doing them. Another motion control is when you are getting tackled you can 'drum' the controller which increases your chances to break the tackle. Or if you drum before getting tackled it acts like the 'Truck Stick' in previous versions. This also works vice-versa; when you are the tackler drumming the remote increases the chances that you player will bring the ball carrier to the ground. Kicking is also now done by swinging the remote which makes kicking long field goals a lot more difficult, meaning there you really do have to consider punting rather than going for that 50 yard FG. Punting is also done in a similar fashion but is slightly easier to control. The final motion addition is when you score a TD. When you score the game will ask you to dance, which is effectively flailing your arms around s much as possible, which will boost your player throughout the current game. This does seem rather gimmicky, but it does add a bit more enjoyment when you score a TD.
I have to admit, that even after owning and playing this game for nearly a year, I haven't even ventured outside of the franchise mode. The mini games just don't really interest me, and after trying out the superstar mode in 06 and being disappointed and bored I am reluctant even to try it out in this version. This version also includes online play, although being in the UK means you can only player fellow European players. Again though, I have not tried out this part of the game.
The franchise mode is very similar to all other maddens and there's no real changes to speak off. The real changes have happened inside the game itself. As well as the motion commands mentioned above there is now an in-game ticker showing you the scores from around the league which adds a bit to the game, it does now feel a bit more like your watching a true NFL game. The graphics are also improved. The main addition is the 'all-play' element. The idea of this is to allow anyone to just pick up and play by simplifying the controls. This does work, but is pretty gimmicky when you compare it to what the PS3 and Xbox version get instead. On those consoles the ability of your players and the computers players are changed depending on your ability to make the games more evenly matched, this is known as 'my skill'. This does make it feel like the wii owners have been short-changed. I was excited to hear of this addition, but then very disappointed when it was announced it wasn't included in the wii version.
Overall I would say this version of madden is the best so far (not including 10 as I haven't tried it out) and the wii control additions do make you feel more 'in the game'. However the all-play addition leaves a bitter taste in the mouth when you realise its sub-par to Xbox and ps3 counterparts.