I love Person of Interest too, and Criminal Minds, Big Bang Theory, CSI, NCIS, Elementery, Game of Thrones and The Walking Dead. Just started watching season 1 of East Bound and Down.
Haven't tried The Walking Dead yet, and CSI and NCIS tend to bore me now. Love the rest of your choices. I would add , on PBS Inspector Morse, Inspector Lewis, Doc Martin and Garrow's Law. Also try not to miss Charlie Rose.