I've made videos of riding through all 18 regions in Lord of the Rings Online.
I think its good for people who want to see how different regions looks and how big is the game world.
One of my favourites videos I have watched many times is video 15 Enedwaith. It is because of very good weather effects like rain, wind and very good sounds and epic soundtrack starting at 2:15. Not the best quality but worth watching in my opinion http://youtu.be/qpG8d1MwjW8?t=2m10s
Not often you can see weather effects like this. Usually in this game its nice and sunny.
After making all these videos I am sure Lotro is the game with largest game world mmorpg. Even if you find larger world it will not be as much detailed, complex with that many different regions and landscapes. Example Fallen Earth, huge 3 sectors but mostly empty desert. I have nothing against FE, its a good game, just comparing world size and structure.
As for Lotro more regions coming this year. The Great River region in spring and Rohan (almost twice the size of Moria) in end of the year.
Alpet - level 65 loremaster.