I gave up the show in the middle of last season because I didn't like the direction it took.  My daughter talked me into trying it again so I caught up with the show just before it started.  And darn if it isn't growing on me again.  I like the direction this season has taken.  I've never really taken to Nathan so it makes sense for him to be the misguided villain.  I only hope Hiro gets his abilities again.  They need to make better use of his character though it's fun watching the roles reversed with him and Ando.