I watched the first half on youtube last night. Good story so far. I'll watch the second half tonight.
It's an interesting story how this all came to be. It seems when Tennent came to RTD about taking the year off to work for the Royal Shakespeare company, RTD told him it wouldn't be a problem. They would just make a series of specials and then it would be back to business as usual. Unfortunately, RTD never told the BBC about this. He was, at the same time, telling the BBC about gearing up for a sixth season. Unforunately, the BBC was counting on a sixth season of Doctor Who. They had already sold the advertising and DVD rights and were counting on the extra revenue for the show. This made the BBC extreemly mad. They fired the entire production staff and writers of the show. (the same production staff worked on Torchwood) Today, everyone still works for the BBC but has been exhiled to places outside of London. RTD still works for the BBC but as a BBCA writer. Unfortunately the BBCA doesn't produce anything so he is stuck in limbo. Tennant didn't want to leave the show but was forced out by the BBC.
Finally, the ending of the second part of the show was changed. That is not the original ending that RTD filmed with Tennant. The BBC went back and had Stephen Moffet rewrite the ending. RTD is mad that his show didn't end the way he originally wrote it.