I have been watching the new (2005 onwards) series of Doctor Who, and found it very good. Generally good story lines, often a subtle arc going through a whole season.
I am much more impressed by the new series than the old one. This should not be a surprise, since a lot has happened to scifi TV in the last 20 years. No wonder we sometimes find the older tv series a little lacking. Not just special effects, but in general.
Watched episode 11 , Utopia, of the 3rd (new) series in the week end and found it extremely promising for the 2 concluding episodes. I am not going to give any spoilers yet.