I watch a lot of PBS and one of my favorites on there just finished up its second season is Mr. Selfridge. Some of the best acting and character development I have seen in a while. Jeremy Piven as Harry Selfridge is absolutely brilliants such a different character than he played on Entourage, think it suits him more actually.
One show that never gets a lot of talk that is on HBO is The Newsroom. Its great a series are able to work in really life headlines and big stories from the world of news into the series. Also has a really good cast led by Jeff Daniels.