The Sopranos, which I started a few weeks ago. 6 and 1/2 seasons.
What a fantastic series. Well developed plots and characters, fantastic acting, lots of different themes. Sometimes the violence was too intense for me, but everything was incredibly well executed.
There were many deaths which devastated me as I became invested in a lot of the characters. The final scene knocked the wind out of me and I cried. I won't say more. No spoilers here.
Favorite characters: Tony, Carmella, Adriana, Christopher, Corrado. Least favorite: Melfi, Meadow, AJ.