Saw it, loved it. I started watching it this year, a few months back. I got caught up to this season a few episodes in and am all caught up. The last few episodes were epic. A great thing about the show that no other show is doing, maybe Game of Thrones, but there are many epic moments each season. They're not afraid to have an epic episode at random points in the season. As epic as the season finale was, the episode the week before Thanksgiving was even more epic.
I stayed away from the show and dismissed it. Just as I did Supernatural. I ended up giving both shows a try and I'm loving both considerably. It took a while to catch up on Supernatural. Both great shows and I highly recommend both.