Game of Thrones. Boardwalk Empire. Breaking Bad has lost some steam, but it's still good. The Walking Dead is dragging along, but I'm still watching. All are HBO or AMC series, two incredible networks at the moment.
Not enough people are watching Louie (FX, Louis C.K., link
). One of the best comedies. Ever.
Even less are watching the great Boss (Starz, Gus van Sant, link
), but it's awesome and I highly recommend it. Finale is Friday, hope it's back for season two.