We watch "Evolution of the Daleks" (Series 3, Episode 5) where the Doctor and Not-Rose, still in Depression era New York, face a hairy situation in their attempt to choke off the attack of a one-eyed monster at the base of it's operations. Whilst there, the Doctor spreads his DNA amongst the masses (less gross than it sounds), Not-Rose hosts a pig roast and the Earth just doesn't give a hoot because the 1930's just sucked y'all.