NuWho - the Revived Show
[Updated through series 11]
Let's start out with some history. Doctor Who started in 1963, but was cancelled in the 80s and subsequently revived in 2005. It's been running ever since. I'm assuming you want to start with the post-2005 revived show, called "NuWho" or "New Who," so this list covers that - I'll be posting one for the Classic Show soon-ish.