I read John Sinnott's DVD review of Doctor Who: The Beginning
Nice overview of the set, though you've left out a featurette about the creation of the Daleks on disc 2.
One reason for the aliasing is that some of the prints used are surpressed field telerecordings. What this means is that when film copies were taken of the 405-line videotapes back in the 1960s, only one field of the tape was used to create one frame of film, rather than both, hence a horizontal resolution of less than 200 lines!
Perhaps you should mention VidFIRE? This is a technique invented by members of the "restoration team" that invents fields (remember that the film copies only have half the number of fields per second as the original tapes did) so that the image looks like tape again. It usually works incredibly convincingly.