Mmm, the eye bogies as bad guys thing I can deal with, because this is a wacky show and all, but I just didn't really understand what was going on for the last 10 minutes or so. And overall I found it kind of boring. The bottle episodes on a space station have been done too much now, and the two-parter earlier in the season was so much better and had more interesting characters. It's difficult not to compare the two and find this one lacking.
The disintegration at the end has probably traumatised a generation of kids who begged to stay up late, and their parents who said "oh, ok then, it's only Doctor Who... how bad could it be?"
Next week's looks interesting, even if that was definitely Diagon Alley.