Ya Fable 3 was overall a big disappointment. The only reason I spent any large amount of time doing side quests was because I wanted to be good, but still save everyone, so I had to kill time while my housing empire made me rich. Some funny stuff, a bit of enjoyment to be had in a quest or two, but other then that it was pretty bad.
Fallout New Vegas, I haven't played that too much. Only a few hours in, but so far really enjoyable. I like how they ramped up the difficulty a bit over Fallout 3, because I could breeze through that game. I do sort of miss the ability to just go randomly explore the wasteland without fear of getting my face owned, but now I've got Boone so I think I'll be ok. I feel like they took what Fallout 3 did right, brought back some good elements from Fallout 1 and 2, and added some pretty cool new features, so overall really well done. But they lose massive points for no Dogmeat. Even if he is completely useless he just has to be in the Fallout games but from what I heard there's a Robotic dog companion out there...and so begins my epic quest.