Spoiler for The Doctor's Daughter
The Stig is totally a rogue Hath on Earth. The Stig would communicate with bubbles if he had need. That's why he never takes his helmet off--it has that green stuff around his head so he could breathe.
Look me in the eye and tell me it couldn't be true.
Ep, generally eh. Except for the Hath. And Dr. Marfa Jones. Always on form is our Marth Jones. And Donna. Donna was pretty groovy this ep too. She's the sort of Maths genius I'd aspire to be if I liked Maths.
Amusing how humans are constantly portrayed as ignorant and bad in this show. It's kind of a weird trend.