Yeah, I suspect that even the most spoiler-phobic are going to be well aware of David and Billie's involvement in the anniversary. It would be cool if there are characters coming back who are kept a surprise, but it's good to have these to look forward to.

Numfar's dance of joy never ceases to fill me with delight. I'm glad it made you smile too. :)

I must admit that I'm nervous as well as excited. Moffat can write really stellar episodes sometimes, but I feel like he's been pretty inconsistent. Also, he has referred to Rose as "clingy" in the past; I don't really trust him with the character. We shall see. Hopefully David and Billie wouldn't have agreed if the script was weak.