This is an interesting topic. First my past obsessions some of which i currently read fanfic in and sometime rewatch on dvd:
Star Trek (my first and still much loved fandom beginning in 1966)
Star Trek TNG
Star Trek Voyager
Babylon 5
Beauty and the Beast (tv version)
The X-files
Magnum PI
Buffy
And to a lesser extent numerous other usually sci fi shows.
Currently i rarely find anything worth watching on the
old networks abc,cbs or nbc. The last sitcom i watched regularly was probably either The Mary Tyler Moore Show or Newhart. Which certainly gives away my age. I haven't been able to get into more recent sitcoms though i occasionally have tried to. I tend to watch cable if not watching dvds.
Currently i watch
What Not to Wear on TLC
On HGTV
House Hunters
House Hunters International
Divine Design
The Tudors on Showtime
Dexter also Showtime
And i constantly have Fox News channel on while
surfing the net or reading fanfic.
