Just finished watching the entire Dexter season.
I don't think I've had a better time with a first season since The Sopranos.
Dexter is particularly, powerfully delicious in its depiction of a character addicted to murder and who - through pretending to be human - eventually becomes more human. A human who kills, that is.
He reminds me very much of people in AA who build secret lives around drinking and drugs and sex but appear to function normally in the world.
Best new show all around (acting/writing/direction) on "TV."