The Final Problem - non-spoilery reaction
Anyone who knows me knows I wanted only one thing out of this episode and the fact that I loved it means I got that thing. So only spoiler-free beyond that one thing.
Well, now it's 4/4: each season my favourite episode is the last one. Much as I liked TLD, this one had so many "AAAAA!!!" moments, I just, just..."AAAAA!!!" *flailing* pretty much says it all.
1. Head canon confirmed? check
2. Everyone being awesome? check
3. Cleverness galore? check
4. Dee figuring out what the hell is going on before the big reveal? check (that not bragging; usually I have to watch these things three times before I can follow what's really going on, so it's a very pleasant surprise to not feel like I was in the dark 78% of the time on first viewing)