Coincidentally a key theme was the importance of touch in humanising people, plus the good old Doctor Who-ish celebration of diversity. altariel points out the use of the green crescent instead of the red cross.
David Tennant's attempt to impersonate Zoe Wanamaker => Austin Powers.
Billy Piper continues to do a great job.
The deus ex machina made no sense at all.
Cassandra's death scene = not a dry eye in the house
Are we skirting a bit close to deifying the Doctor? I don't object in theological terms, but in story terms it's a bit risky. Apotheosis paints you into a plot corner.
We can steal from Hollywood films like Minority Report and The Matrix. Because we want to!