Positives: Dr., Amy & Rory trying to live 'normal' lives. The doctor trying to entertain himself. Rory's dad is pretty funny. A new Leffbridge-Stewart character introduced.
Negatives: Rory & Amy had plenty of time to rescue the other humans on the spaceship before it blew up - and yet they just left them there & watched the doctor wave his screwdriver around.
Using the "sonic screwdriver" to um, reverse worldwide heart attacks The "sonic screwdriver" should never be used as the solutions to episodes, that's just lazy!
They called it the power of 3 yet they kept featuring Rory's dad which would kind of make it 4.