Nu Doctor Who, yea, episodes are mostly stand alones, though there are hints throughout the season leading up to the Finale. S1 of the NuWho, it's very minor, but, it does get a little more involved as you go through Tennant's tenure, and quite a bit heavier arc-ness once you hit Moffat as Showrunner and Smith as Doctor
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?