Currently watching Game of thrones, it's all I have time for at the moment.
But the last one I completed was Sherlock BBC (well, only 1 season but the second is not out yet).
I am watching Hannibal and I really like it. Most of my friends think it is boring but I like the actor who plays Dr. Hannibal Lecter. The last one I saw before this is The Americans. That was another awesome show.