Doctor Who

In Doctor Who Season 1-4 , Rose Tyler a young shop assistant in a London department store lives a humdrum and profoundly average life - until the night the shop dummies where she works wake up and try to kill her. Her life is saved by a strange man who only calls himself The Doctor and intrigued by him she finds herself thrown headlong into a hectic battle to stop an alien presence from invading Earth and annihilating the human race. She comes to learn that her new friend is even stranger than she thought - in fact the Doctor 's an alien adventurer called a 'Time Lord' seemingly the last of his race who travels through time and space in his TARDIS battling evil where he finds it. And if she travels with him she'll find herself witnessing the heat-death of the Earth five billion years in the future meeting Charles Dickens in the past and encountering lifeforms and invaders stranger than she'd ever thought possible. Only one thing is certain - it'll be the ride of a lifetime..More in Doctor Who Season 1-4 DVD Boxset
For a start, the larger mythology that Moffat has put in place - mostly regarding the nature of River Song's relationship to  Amy Pond (River is Amy's daughter) and the ongoing mystery surrounding the death of Doctor Who - has been pretty interesting, even though they saved the most confusing episode for last. It was no wonder the "previously on Doctor Who" segment was so damn long.
Though the finale did show how clever the writing has been, giving us a different perspective on the events of the season opener (The Impossible Astronaut) and using elements from throughout the latest batch of episodes (the Teselecta from Let's Kill Hitler, the headless monks' heads from  A Good Man Goes to War, to name two). Sure, having the Doctor use the Teselecta as a proxy does seem a rather predictable move in hindsight, but it's a credit to the writers that it still seemed a surprise when it was finally revealed to the audience.