Doctor Who - The Big Bang

I watched this episode again last night and loved it even more, in fact I think I may watch it again tonight! Mrs NotaSheep liked it a lot but she was a little confused as she is less au fait with SciFi conceits.

If you want to read more about the episode then The Nameless Libertarian on The Appalling Strangeness has an interesting article and Wikipedia has a plot explanation if you are still confused.