I have to say that that was terrible. Indeed it was beyond terrible. Awful.
1) The Adipose 'children' are possibly the silliest Doctor Who creatures ever.
2) The 'plot' was trivial, juvenile and may just have possibly worked as a CBBC 'Sarah Jane Adventures' story but thats it.
3) It was embarassing to watch especially the cheesy Bernard Cribbins scene at the end.
4) The McMusic which swamped the episode was worse than ever, especially the beefed up theme.