I had problems with the last episode, but Flesh And Stone was non-stop brilliance. Best one so far this series.
That moment when the Weeping Angels started moving for the first time on-screen really **** me up... and properly bringing the Crack into the storyline was superb.
That said, I'm not sure about the ending with Amy though... the thing that ruined Martha was her constant pining after the Doctor, Rose got irritating every time she got jealous, and one of the best things about Donna was that she felt like a proper equal companion rather than "a love interest". Let's hope they know what they're doing, and having Amy's fiancÚ along for the next one will be interesting!