I just got around to watching the last two episodes and I agree with what most posters have said with regards to Donna.
I loved that they brought the Dr.'s “family” together.
I felt a bit pervy about Dr. 2.0 and Rose getting to be “together” now but I think Rose is hot and I’d jump on that chance if offered.
I’m very annoyed about having to wait so long until the show goes back into regular episodes but I love the Dr. and I will be here waiting for his return like most of his companions who get left behind except for Donna of course.