Well Supernatural is on its 9th season, but it is so good, if you have the time check it out
Grimm - On it's 3rd season
Haven - Just finished its 3rd season
Sleepy Hollow - on its 1st season
The Following - getting ready to start its 3rd season
Hannibal - getting ready to start its 2nd season
American Horror Story - on its 3rd season
Sherlock - 3 seasons
Inbetweeners, only three or four seasons were made so easy to catch up on.
A two part show called the 7.39 was a good romance.
Big Bang Theory?
90210? Catfish?
Bad Education?
Family Guy?
Hostages began last week its about the President needing surgery and so a group of terrorists, kidnap his surgeons family and tell her that in order to save her family she must kill the president during the surgery.
My favorite on-going series is Community ( http://www.imdb.com/title/tt1439629/ ). Currently in it's 5th season, after the 5th season is over, it has a total of 97 episodes which are around 22 minutes each... it's a comedy show.
Two Broke Girls
Mom
Hostage
Under The Dome
teen wolf
true blood
(Comedy, Romance, Science fiction) TV series that's not that far ahead. Like in there second season probably the third.