I mean, there's little bits that I liked, not least of all the return of "reverse the polarity of the neutron flow" and one of my favourite lines from Matt Smith's Doctor so far: "I've got to get to that cockerel before all hell breaks loose! I never thought I'd have to say that again."
Still, it all leaves us with stuff to get very excited about for next week's mid-series finale (too soon!) The ending is brilliant, with Amy turning out to be a more sophisticated version of the Flesh. It explains her occasional pregnancy (the body in the TARDIS isn't pregnant, but it contains the consciousness of a woman who is) and Frances Barber's dreamlike cameos are made clear earlier than I expected them to be. My theory is that Amy was abducted and replaced between episodes one and two - not just because of the gap in the story, but also because in "The Impossible Astronaut" she straightforwardly announced she was pregnant, while by "Day of the Moon" the mysterious pregnant/not pregnant scans had started.
Also, the Ganger Doctor has a sonic screwdriver when he melts, and makes some reference to possibly being able to put himself back together - which may provide an answer for how come we saw the Doctor die for good at the start of the series. Ah well, some answers on the way next week, a lot more we'll have to wait until Autumn for I suppose.