I just watched Doctor Who Confidential, which as for many of the recent ones, was quite interesting.
I like that the Drone Dalek is red, it's very much like the guys wearing red jerseys in Star Trek, you know a lot of red Daleks are going to get shot later in the series!
I don't think they completely listed all the types of Dalek, we only had Dark Green - Legacy / Ironside, White - Supreme (Leader), and Red - Drone. There are also an Orange, Yellow and Blue Daleks. In the programme, Mark Gatiss mentions Strategist, Scientist and Eternal Daleks, which I guess match up to the other three colours.
It was also amusing to hear that the last series Daleks were scaled to Billie Piper, and these are now taller, since Karen Gillan is a taller assistant!
Did anyone else notice that Bracewell is referred to by the Doctor as having a Positronic Brain, very Issac Asimov! (I don't remember Positronic Brains ever being mentioned in Dr Who before).
Is it just me, or was the crack behind the Tardis at the end even less subtle than the various non-subtle cracks in the previous episodes?