i really got into that planet earth series they did (first show I really liked from them in a long time. And If I heard right, it wasn't exactly done by them completely, but by the BBC). I'm sorta starting to like some british programming. Been watching Life on Mars on BBC America recently.
I also used to watch mythbusters, but as i don't really get time to watch so much tv anymore, some shows i just had to say goodbye to.