First season
Just started watching the other day, watched the pilot, went mmm, not bad. Always been a big fan of Nathan from back when he was in Buffy then of course Firefly and DR Horrible...
I like the wit and interactions between Castle and almost everyone else. My favorite is his and his daughter's relationship. Guess I am an old softie, because I think it is one of the best portrayal of a single father and his child I have ever seen.