Still Airing:
Fringe, True Blood, Leverage, Supernatural, Mentalist, CSI (the original), Castle, The Big Bang Theory
Cancelled:
Dollhouse, The Sarah Connor Chronicles, Moonlight, Blood Ties, Tru Calling
Non TV Show:
Dr Horribles Sing A Long Blog
I realize Dr Horrible, Fringe, True Blood, Supernatural, Mentalist, Castle, Dollhouse, The Sarah Connor Chronicles and the Big Bang Theory were all listed by others but I just wanted to further add some more influence towards those. Another vote for those can never hurt.