I really liked this episode. Ok, so it wasn't as action packed as some episodes but it was nice. The best bits were in the quiet moment.
The Doctor was showing off and Martha ends up kidnapped by some really nice people who want to use the fastlane in order to better their lives and that of their child. That was nice.
And the doctor goes off to rescue her.
The Face of Boe imparts his dying words to the doctor.
Ok my favourite bits:
*Ardal O'Hanlon as Brannigan. He was great. It was weird seeing him in cat makeup though. I liked the character though.
*the singing of the hymns. I usually hate all things religious but the old rugged cross is really good.
*the special effects. The gridlocked cars and the macra were really well done.
*the end where the doctor is telling Martha about Gallifrey and the Time War. That was the best bit in the entire epsiode. It was so sad.
And the Face of Boe's final words: "you are not alone." Sounds ominous. Suppose all will be revealed as the series progresses.