The map on the wall looks like Lord of the Rings, so I would guess Lord of the Rings Online.
And that fellow looks magnificent indeed!
To add to the conversation, I would say EVE Online is the best MMO out there. Except that it is the worst one to play as a game... It has the best world. Everyone plays on the same "shard" so if you've read or heard about someone or something, it has happened somewhere in the universe and you can meet them. The economy is virtually entirely player-driven. This allows for some amazing opportunities to make enormous amounts of wealth in-game. The lawless parts of space away from the AI controlled empires are completely open ended allowing the playerbase to police themselves for better or for worse. EVE Online is a Libertarian paradise, and it can be absolute HELL!
All that good, however, comes with enormous amounts of time sinks. If I had no life, I would probably be playing it non-stop.