I don't have TV but watch shows on the internet.
Those I watch pretty regularly:
Dexter
Murdoch Mysteries (not on again till next summer, but followed it closely last season and still like to watch old episodes
)
Game of Thrones
Prime Suspect
Bones
Law & Order: SVU
Criminal Minds
Revenge
Ringer
My Transsexual Summer (only just started but so far I've been following closely)
The Big Bang Theory
How I Met Your Mother