I've been hooked on Call The Midwife lately. If you find Downton Abbey boring at times, this is your middle ground. Granted, I'm a nurse working in OB/Gyn with an anglophile addiction, so I'm completely biased here.
The storyline follows a novice nurse in London's east end in the 50's. She lives with nuns and bikes around delivering babies. Amazingly, it's based on a true story. Season 1 is all online at PBS.