Genius Bonus: Adipose make sense if you have anatomical knowledge.
Harsher in Hindsight: Sylvia says something to the effect of "It's not like the nineteen eighties! No one's unemployed these days, except you!". The episode aired in 2008. The economic meltdown later that year and subsequent recession would sadly render that line incredibly dated.
Special Effect Failure: Well, more of a continuity error, but during the scene where the Doctor and Donna are in the window washers' cart, and Foster is on the roof, she cuts one of the cables. In the shots focussing on her, she cuts the right cable, but in the shots of the Doctor and Donna, the left cable is the one that breaks. Aaargh.