world of warcraft similar games

Does anyone know of any free MMORPG games that are similar to World of Warcraft, maybe even better?

I played WoW for a while and was impressive, but i dont want to pay monthly.So thats why I want to play a game that meets your standards, or almost, and thats pretty demanding games free play.Im whereabouts got much time, so that Runescape, MU Online, Knight Online, Maple Story, Rakion, Hero Online, etc.. games such as courthouses and Ive still not much compared to like if theres a game WoW.So WoW thats not about to share with me please! lol thx

Guild Wars are good. Free monthly. Are launching a third expansion. Graphics are better than Warcraft, the missions are shorter, but can be equally challenging. They have ways of PvP (similar to the battle grounds, which they call Arenas). I enjoyed it.

World of Warcraft game addiction documentary – Game OVERdose