Best show ever -- Dexter, on Showtime.
If you haven't seen it -- I highly recommend you do. Start with Season 1, and I guarantee it will lure you in. Every episode I think "how can it get better than this?!?!" and yet - every episode, every season -- it does. The character quirks, the storylines, the monologues and character development are all outstanding.
Imagine.... who ever thought that a show about a serial killer could illicit compassion and even affection towards a character with the kinds of traits that are reprehensible? It sort of puts into perspective the fact that life isn't black and white....there are always shades of gray.