I'm still furious about Ten taking Donna's memory without a discussion and without her consent. I liked Ten well enough until that moment. After that, in all the 2009 specials, he was an ass and I couldn't stand him.
An interpretation of what might have been going through the doctors mind during that beautiful speech in the latest episode The Rings Of Akhenaten. The memories he might have summoned, even the comparisons he might have drawn between himself and the parasite god. :'(