BFME2 works surprisingly well on the 360, EA has done a great job porting it.
The singleplayer story doesn't involve much of anything that occured in the movie and instead focuses on the battles and events happening simultaneously to what we see during the films. There is both a "good" and "evil" campaign that you can play through. Neither campaign is very long but together they are around 15-20 hours. Most of the achievements are obtained by beating the singleplayer levels with all of the objectives and bonus objectives complete. You can also unlock various heroes for use in offline and online matches.
There is also the traditional singleplayer Skirmish mode in which you can set up battles with up to four players. It has very few tweakable settings, but still allows you to make the battle of your choosing. There is also a good amount of maps to choose from and all of them support the maximum 4 players.
The online portion of the game is where the great times will be had. There is a wider variety of gametypes online as well as smarter and more strategic opponents. Some of the gametypes include king of the kill, capture the flag, and capture and hold. If you are afraid to hurt your rank or stats, there is an unranked match option to get you used to playing online.
The controls are very easy to use a consist of mostly pressing the right trigger and the A button. This game is a pick up and play game but can also be difficult to master. (meaning that if you play a lot you can become better than your competition)
The graphics aren't anything special. They are good don't get me wrong, but they certainly aren't great. (but when's the last time an RTS had beautiful graphics?) The explosions however do look pretty good nad make the game that much better.
The sound is the real vocal point of the game (was that a pun) and features the great LOTR music that you have come to love. The units also sound great with clattering armor when they run and earth shaking footsteps and growling when a troll is near.
Lord of the Rings: Battle for Middle Earth 2 is a good game that will keep you playing it for sometime. Even though the best part of the game is the online portion, I would suggest at least a rental of this title.