I would've said Marvel's Agents of SHIELD, but it doesn't seem to be doing very well beyond its première (in the UK, that is; I wouldn't be surprised if Channel 4, who air it here two days after ABC, shunt it sideways to its younger sister channel E4; same thing happened with Ugly Betty, New Girl and until Sky stole it, Glee. Channel 4 doesn't seem to have much luck with many American shows that aren't specifically aimed at adults, i.e. Homeland and the recent Masters of Sex).
Anyway, staying on subject...
Homeland (methinks it's slipping into Lost-style making-it-up-as-we-go-along territory)
Under the Dome
Big Bang Theory (terrible misrepresentation of Aespergers; if I had a dime for the amount of stupid people irl who say to me "Oh, you have that disease Sheldon has?")
I'm a Celebrity Get Me Out of Here (tacky Survivor-esque gameshow with nonentity celebrities trying to 'survive' in Australia; this year's features the actor who played Carlton 20 years ago in The Fresh Prince of Bel Air)
The Only Way is Essex (UK adaptation of Jersey Shore, namely camera-friendly amoebas not really doing anything - extremely popular with young women for reasons I don't understand)
Strictly Come Dancing (UK forebear of Dancing with the Stars)
Great British Bake-off (a sort of less aggressive equivalent of Iron Chef, only with baking)
Dr Who (alas, current producer Steven Moffat is the UK Josh Whedon, ie. seen as a near-god of sci-fi/cult but personally, I don't like where he has taken the series; too self-referential for casual viewers like me.)
How I Met Your Mother (I don't understand the obsession with dating/sleeping with people, nor why it would be appropriate to tell your children about it; thankfully it's to be retired, though I've heard rumours of a spin-off imaginatively titled, "How I Met Your Father")
Borgen (Danish political drama)
and lastly Legend of Korra (in the animation appreciation circles, it's highly revered material but I personally think it's poorly written and rushed out; alas, it's lonely being an iconoclast...)