Yes. Yes indeed.
The 2nd disk is pretty good, and I'm not very far in disk 3, but it's been good. From what I hear, the 3rd disk blows the game out of the water, and really has a good storyline (and is the longest disk).
Right now, at near the start of disk 3, I've discovered *maybe* 50% of the map.
Back from the dead, I'm afraid.