This game does an amazing job of translating J.R.R. Tolkien's world. The landscape and buildings are the most beautifully designed I have yet seen in an MMORPG, and you can differentiate the various areas by their unique flora and architecture.
The game's quest structure is impressive as well. Many of the quests are part of a slowly developing storyline, and they usually involve supporting characters from the novels. Another nice feature is that the majority of experience your characters earn is gained from completing quests rather from simply killing monsters. This means that, while you might still spend time hunting wolves and bears and the like for their pelts, you won't be endlessly hunting them for the experience needed to level up.
While the game is still in closed beta, open beta will be available at the end of the month for geeks who pre-order. The official launch is April 24.