I don't really have favourite shows, I have a long list of shows that I watch and love but I tend to go through obsessive phases with tv shows.
My current favourites are,
-Chuck
-How I Met Your Mother
-Firefly
-Sea Patrol
-Doctor Who
And then everything else I love,
-Bones (although I hated season four)
-Criminal Minds
-Fringe
-Castle
-Father Ted
-Black Books
-The X-Files
-House
-Monarch of the Glen
-Summer Heights High
-The Chasers War on Everything
-The Big Bang Theory
-Top Gear
-Torchwood
-Third Watch
um I think I should stop there