Dexter
Jericho
Lost
Heroes
Weeds
Dead Like Me (not as bad as it sounds)
The Office - both British and American versions
Airline
It's not a yearly series, but Walking with Dinosaur is truly amazing (6 part series and some special episodes added to it).
I'm just starting to watch 30 Rock and so far so good. I'm not too far in on season 1 though.
EDIT: I think all of these are on instant watch yet. Oh, and if an episode is skipped (Netflix likes to do this), check Hulu to see if they have it online. There are also lots of other places on the web to catch the in between episodes.