I've just finished watching season 1 of the following, highy recommend it.
I caught up with the last few episodes last night, but I don't think I'm going to watch the next season. I felt like the writing was pretty lazy (Oh, look! The story is slowing down, so let's knife somebody in the stomach!), and my suspension of disbelief is pretty strained when an entire FBI team can't catch a single bad guy before they walk up to the police station and knife someone in the stomach.
For other shows that seem off to a good start, I'm cautiously optimistic about Hostages, The Blacklist, and Sleepy Hollow. I hear good things about The Americans as well, have only watched the first two episodes.