I'm really enjoying New Girl, but probably wouldn't watch it unless Zooey was in it.
Big Bang Theory is always a goer.
Dexter is definitely my favourite current show - the end of Season 6 blew my mind!
I also catch Downton Abbey, Parenthood, and like my musicals so I keep track of Glee as well.
As far as Aussie shows, I'm looking forward to the return of Packed to the Rafters and Winners and Losers. The Slap was a winner for me - I read the book last year before I knew they were making a series. Nothing but a pleasant surprise.
Boyfriend has pulled me in to some of his older shows - I finished the complete series of Outrageous Fortune in under 3 months and we are currently watching Arrested Development from way back when Michael Cera was actually an awkward teenager instead of trying to play on.