Welcome to Sword Art Online 2.0, or 1.5 I'm not quite sure. Either way, Log Horizon has the same premise as SAO, and I'm interesting in see how they handle being compared to a pretty popular anime. The only thing different is the fact that this game world was around already and the player get stuck after an expansion.
Honestly, going in to Log Horizon I was hoping for a psychological approach to this kind of scenario, but it doesn't seem like that will happen because they side step most of the people freaking out. It's fine that they didn't go for that angle, but I want some anime that goes with that kind of plot some time soon. With the world being already set, and most of the player our main character meet are level 90 -- which was strange to me at first, but later we find out that is the level cap -- we do have a slight pick up in speed for world building and thats nice.
So far I'm interested in seeing what Log Horizon has to offer later on. As of the first episode, I can say that it is on a nice start and hope it doesn't slowly lose the pull it had at the start -- like SAO did, around the tail end of it's first arc.